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12530231560 = 2357114068257
BaseRepresentation
bin10111010101101110…
…00010100100001000
31012100020211201022101
423222313002210020
5201130214402220
65431210203144
7622340132230
oct135267024410
935306751271
1012530231560
11534aa97480
1225184234b4
131248c73102
1486c202cc0
154d50ab30a
hex2eadc2908

12530231560 has 64 divisors (see below), whose sum is σ = 35149749120. Its totient is φ = 3905525760.

The previous prime is 12530231551. The next prime is 12530231569. The reversal of 12530231560 is 6513203521.

It is an interprime number because it is at equal distance from previous prime (12530231551) and next prime (12530231569).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (12530231569) 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, 2031049 + ... + 2037208.

It is an arithmetic number, because the mean of its divisors is an integer number (549214830).

Almost surely, 212530231560 is an apocalyptic number.

12530231560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12530231560 is an abundant number, since it is smaller than the sum of its proper divisors (22619517560).

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

12530231560 is a wasteful number, since it uses less digits than its factorization.

12530231560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068286 (or 4068282 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 12530231560 in words is "twelve billion, five hundred thirty million, two hundred thirty-one thousand, five hundred sixty".

Divisors: 1 2 4 5 7 8 10 11 14 20 22 28 35 40 44 55 56 70 77 88 110 140 154 220 280 308 385 440 616 770 1540 3080 4068257 8136514 16273028 20341285 28477799 32546056 40682570 44750827 56955598 81365140 89501654 113911196 142388995 162730280 179003308 223754135 227822392 284777990 313255789 358006616 447508270 569555980 626511578 895016540 1139111960 1253023156 1566278945 1790033080 2506046312 3132557890 6265115780 12530231560