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12637960 = 235315949
BaseRepresentation
bin110000001101…
…011100001000
3212210002000121
4300031130020
511213403320
61130513024
7212264236
oct60153410
925702017
1012637960
1171520a5
124295774
1328064aa
14196d956
1511998aa
hexc0d708

12637960 has 16 divisors (see below), whose sum is σ = 28435500. Its totient is φ = 5055168.

The previous prime is 12637957. The next prime is 12637967. The reversal of 12637960 is 6973621.

It can be written as a sum of positive squares in 2 ways, for example, as 12236004 + 401956 = 3498^2 + 634^2 .

It is not an unprimeable number, because it can be changed into a prime (12637967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157935 + ... + 158014.

Almost surely, 212637960 is an apocalyptic number.

12637960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12637960 is an abundant number, since it is smaller than the sum of its proper divisors (15797540).

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

12637960 is a wasteful number, since it uses less digits than its factorization.

12637960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315960 (or 315956 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 12637960 is about 3554.9908579348. The cubic root of 12637960 is about 232.9301245029.

The spelling of 12637960 in words is "twelve million, six hundred thirty-seven thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 315949 631898 1263796 1579745 2527592 3159490 6318980 12637960