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30241680 = 2435747383
BaseRepresentation
bin111001101011…
…1001110010000
32002220102210020
41303113032100
530220213210
63000103440
7515023110
oct163271620
962812706
1030241680
1116086027
12a164b80
13635acb1
144033040
1529c5770
hex1cd7390

30241680 has 160 divisors (see below), whose sum is σ = 109707264. Its totient is φ = 6747648.

The previous prime is 30241643. The next prime is 30241681. The reversal of 30241680 is 8614203.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30241680.

It is not an unprimeable number, because it can be changed into a prime (30241681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78769 + ... + 79151.

Almost surely, 230241680 is an apocalyptic number.

30241680 is a gapful number since it is divisible by the number (30) 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 30241680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54853632).

30241680 is an abundant number, since it is smaller than the sum of its proper divisors (79465584).

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

30241680 is a wasteful number, since it uses less digits than its factorization.

30241680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 30241680 is about 5499.2435843487. The cubic root of 30241680 is about 311.5554154421. Note that the first 3 decimals are identical.

Adding to 30241680 its reverse (8614203), we get a palindrome (38855883).

The spelling of 30241680 in words is "thirty million, two hundred forty-one thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 47 48 56 60 70 80 84 94 105 112 120 140 141 168 188 210 235 240 280 282 329 336 376 383 420 470 560 564 658 705 752 766 840 940 987 1128 1149 1316 1410 1532 1645 1680 1880 1915 1974 2256 2298 2632 2681 2820 3064 3290 3760 3830 3948 4596 4935 5264 5362 5640 5745 6128 6580 7660 7896 8043 9192 9870 10724 11280 11490 13160 13405 15320 15792 16086 18001 18384 19740 21448 22980 26320 26810 30640 32172 36002 39480 40215 42896 45960 53620 54003 64344 72004 78960 80430 90005 91920 107240 108006 126007 128688 144008 160860 180010 214480 216012 252014 270015 288016 321720 360020 378021 432024 504028 540030 630035 643440 720040 756042 864048 1008056 1080060 1260070 1440080 1512084 1890105 2016112 2160120 2520140 3024168 3780210 4320240 5040280 6048336 7560420 10080560 15120840 30241680