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1013241220 = 225593072797
BaseRepresentation
bin111100011001001…
…101010110000100
32121121120222122121
4330121031112010
54033342204340
6244313135324
734052260015
oct7431152604
92547528577
101013241220
1147aa48142
122433ba544
13131bc5124
14987d700c
155de4994a
hex3c64d584

1013241220 has 48 divisors (see below), whose sum is σ = 2171695680. Its totient is φ = 396987264.

The previous prime is 1013241209. The next prime is 1013241221. The reversal of 1013241220 is 221423101.

It is a junction number, because it is equal to n+sod(n) for n = 1013241194 and 1013241203.

It is not an unprimeable number, because it can be changed into a prime (1013241221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360862 + ... + 363658.

It is an arithmetic number, because the mean of its divisors is an integer number (45243660).

Almost surely, 21013241220 is an apocalyptic number.

1013241220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013241220 is an abundant number, since it is smaller than the sum of its proper divisors (1158454460).

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

1013241220 is a wasteful number, since it uses less digits than its factorization.

1013241220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172 (or 3170 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1013241220 is about 31831.4501711750. The cubic root of 1013241220 is about 1004.3944009538.

Adding to 1013241220 its reverse (221423101), we get a palindrome (1234664321).

The spelling of 1013241220 in words is "one billion, thirteen million, two hundred forty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 59 118 236 295 307 590 614 1180 1228 1535 2797 3070 5594 6140 11188 13985 18113 27970 36226 55940 72452 90565 165023 181130 330046 362260 660092 825115 858679 1650230 1717358 3300460 3434716 4293395 8586790 17173580 50662061 101324122 202648244 253310305 506620610 1013241220