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12708574240 = 255173345833
BaseRepresentation
bin10111101010111110…
…10111010000100000
31012210200102110110211
423311133113100200
5202011343333430
65501020503504
7626634045565
oct136537272040
935720373424
1012708574240
115431727a1a
1225680aab94
131276bb681b
14887b8886c
154e5a8872a
hex2f57d7420

12708574240 has 48 divisors (see below), whose sum is σ = 30041986968. Its totient is φ = 5080385536.

The previous prime is 12708574231. The next prime is 12708574243. The reversal of 12708574240 is 4247580721.

It can be written as a sum of positive squares in 4 ways, for example, as 10575242896 + 2133331344 = 102836^2 + 46188^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 12708574193 and 12708574202.

It is not an unprimeable number, because it can be changed into a prime (12708574243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254364 + ... + 300196.

Almost surely, 212708574240 is an apocalyptic number.

12708574240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12708574240 is an abundant number, since it is smaller than the sum of its proper divisors (17333412728).

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

12708574240 is a wasteful number, since it uses less digits than its factorization.

12708574240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47581 (or 47573 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 12708574240 in words is "twelve billion, seven hundred eight million, five hundred seventy-four thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1733 3466 6932 8665 13864 17330 27728 34660 45833 55456 69320 91666 138640 183332 229165 277280 366664 458330 733328 916660 1466656 1833320 3666640 7333280 79428589 158857178 317714356 397142945 635428712 794285890 1270857424 1588571780 2541714848 3177143560 6354287120 12708574240