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12513880 = 2352691163
BaseRepresentation
bin101111101111…
…001001011000
3212112202211001
4233233021120
511200421010
61124114344
7211236421
oct57571130
925482731
1012513880
117077955
1242359b4
132791b82
14193a648
151172c3a
hexbef258

12513880 has 32 divisors (see below), whose sum is σ = 28285200. Its totient is φ = 4982656.

The previous prime is 12513869. The next prime is 12513889. The reversal of 12513880 is 8831521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513889) 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, 10179 + ... + 11341.

Almost surely, 212513880 is an apocalyptic number.

12513880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12513880 is an abundant number, since it is smaller than the sum of its proper divisors (15771320).

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

12513880 is a wasteful number, since it uses less digits than its factorization.

12513880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 12513880 is about 3537.4962897507. The cubic root of 12513880 is about 232.1653102430.

The spelling of 12513880 in words is "twelve million, five hundred thirteen thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 269 538 1076 1163 1345 2152 2326 2690 4652 5380 5815 9304 10760 11630 23260 46520 312847 625694 1251388 1564235 2502776 3128470 6256940 12513880