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12530524300 = 2252747380867
BaseRepresentation
bin10111010101110000…
…01010000010001100
31012100021101120212121
423222320022002030
5201130303234200
65431220342324
7622342461550
oct135270120214
935307346777
1012530524300
115350177408
1225185449a4
131249046428
1486c27b860
154d5117e1a
hex2eae0a08c

12530524300 has 72 divisors (see below), whose sum is σ = 31736968704. Its totient is φ = 4204760640.

The previous prime is 12530524289. The next prime is 12530524309. The reversal of 12530524300 is 342503521.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (12530524309) 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, 157534 + ... + 223333.

It is an arithmetic number, because the mean of its divisors is an integer number (440791232).

Almost surely, 212530524300 is an apocalyptic number.

12530524300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12530524300 is an abundant number, since it is smaller than the sum of its proper divisors (19206444404).

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

12530524300 is a wasteful number, since it uses less digits than its factorization.

12530524300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380935 (or 380928 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 12530524300 in words is "twelve billion, five hundred thirty million, five hundred twenty-four thousand, three hundred".

Divisors: 1 2 4 5 7 10 14 20 25 28 35 47 50 70 94 100 140 175 188 235 329 350 470 658 700 940 1175 1316 1645 2350 3290 4700 6580 8225 16450 32900 380867 761734 1523468 1904335 2666069 3808670 5332138 7617340 9521675 10664276 13330345 17900749 19043350 26660690 35801498 38086700 53321380 66651725 71602996 89503745 125305243 133303450 179007490 250610486 266606900 358014980 447518725 501220972 626526215 895037450 1253052430 1790074900 2506104860 3132631075 6265262150 12530524300