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12888590 = 2511139013
BaseRepresentation
bin110001001010…
…101000001110
3220020210211012
4301022220032
511244413330
61140125222
7214360031
oct61125016
926223735
1012888590
117303430
124396812
1328935b0
1419d7018
1511e8c95
hexc4aa0e

12888590 has 32 divisors (see below), whose sum is σ = 27258336. Its totient is φ = 4325760.

The previous prime is 12888583. The next prime is 12888607. The reversal of 12888590 is 9588821.

It is a super-2 number, since 2×128885902 = 332231504376200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3077 + ... + 5936.

It is an arithmetic number, because the mean of its divisors is an integer number (851823).

Almost surely, 212888590 is an apocalyptic number.

12888590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12888590 is an abundant number, since it is smaller than the sum of its proper divisors (14369746).

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

12888590 is a wasteful number, since it uses less digits than its factorization.

12888590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9044.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 12888590 is about 3590.0682444767. The cubic root of 12888590 is about 234.4598428243.

The spelling of 12888590 in words is "twelve million, eight hundred eighty-eight thousand, five hundred ninety".

Divisors: 1 2 5 10 11 13 22 26 55 65 110 130 143 286 715 1430 9013 18026 45065 90130 99143 117169 198286 234338 495715 585845 991430 1171690 1288859 2577718 6444295 12888590