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12530874828 = 22317295034211
BaseRepresentation
bin10111010101110010…
…11111100111001100
31012100022001101201010
423222321133213030
5201130400443303
65431232045220
7622345451523
oct135271374714
935308041633
1012530874828
1153503967aa
122518693810
131249139b44
1486c32d4ba
154d5186c03
hex2eae5f9cc

12530874828 has 96 divisors (see below), whose sum is σ = 32097461760. Its totient is φ = 3787248640.

The previous prime is 12530874827. The next prime is 12530874833. The reversal of 12530874828 is 82847803521.

It is not an unprimeable number, because it can be changed into a prime (12530874821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2973643 + ... + 2977853.

It is an arithmetic number, because the mean of its divisors is an integer number (334348560).

Almost surely, 212530874828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12530874828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16048730880).

12530874828 is an abundant number, since it is smaller than the sum of its proper divisors (19566586932).

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

12530874828 is a wasteful number, since it uses less digits than its factorization.

12530874828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4767 (or 4765 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 12530874828 in words is "twelve billion, five hundred thirty million, eight hundred seventy-four thousand, eight hundred twenty-eight".

Divisors: 1 2 3 4 6 12 17 29 34 51 58 68 87 102 116 174 204 348 493 503 986 1006 1479 1509 1972 2012 2958 3018 4211 5916 6036 8422 8551 12633 14587 16844 17102 25266 25653 29174 34204 43761 50532 51306 58348 71587 87522 102612 122119 143174 175044 214761 244238 247979 286348 366357 429522 488476 495958 732714 743937 859044 991916 1465428 1487874 2076023 2118133 2975748 4152046 4236266 6228069 6354399 8304092 8472532 12456138 12708798 24912276 25417596 36008261 61425857 72016522 108024783 122851714 144033044 184277571 216049566 245703428 368555142 432099132 737110284 1044239569 2088479138 3132718707 4176958276 6265437414 12530874828