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1013233680 = 243256612129
BaseRepresentation
bin111100011001001…
…011100000010000
32121121120121022100
4330121023200100
54033341434210
6244313040400
734052226024
oct7431134020
92547517270
101013233680
1147aa42508
122433b6100
13131bc1874
14987d4384
155de475c0
hex3c64b810

1013233680 has 120 divisors (see below), whose sum is σ = 3409525080. Its totient is φ = 269660160.

The previous prime is 1013233679. The next prime is 1013233681. The reversal of 1013233680 is 863323101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1013233679) and next prime (1013233681).

It can be written as a sum of positive squares in 4 ways, for example, as 118984464 + 894249216 = 10908^2 + 29904^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (1013233681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474856 + ... + 476984.

It is an arithmetic number, because the mean of its divisors is an integer number (28412709).

Almost surely, 21013233680 is an apocalyptic number.

1013233680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1013233680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1704762540).

1013233680 is an abundant number, since it is smaller than the sum of its proper divisors (2396291400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1013233680 is a wasteful number, since it uses less digits than its factorization.

1013233680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809 (or 2800 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1013233680 is about 31831.3317346290. The cubic root of 1013233680 is about 1004.3919095588.

Adding to 1013233680 its reverse (863323101), we get a palindrome (1876556781).

The spelling of 1013233680 in words is "one billion, thirteen million, two hundred thirty-three thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 72 80 90 120 144 180 240 360 661 720 1322 1983 2129 2644 3305 3966 4258 5288 5949 6387 6610 7932 8516 9915 10576 10645 11898 12774 13220 15864 17032 19161 19830 21290 23796 25548 26440 29745 31728 31935 34064 38322 39660 42580 47592 51096 52880 59490 63870 76644 79320 85160 95184 95805 102192 118980 127740 153288 158640 170320 191610 237960 255480 306576 383220 475920 510960 766440 1407269 1532880 2814538 4221807 5629076 7036345 8443614 11258152 12665421 14072690 16887228 21109035 22516304 25330842 28145380 33774456 42218070 50661684 56290760 63327105 67548912 84436140 101323368 112581520 126654210 168872280 202646736 253308420 337744560 506616840 1013233680