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12538876 = 227447817
BaseRepresentation
bin101111110101…
…001111111100
3212121001002211
4233311033330
511202221001
61124430204
7211402330
oct57651774
925531084
1012538876
117094709
124248364
1327a036c
1419457c0
15117a351
hexbf53fc

12538876 has 12 divisors (see below), whose sum is σ = 25077808. Its totient is φ = 5373792.

The previous prime is 12538873. The next prime is 12538891. The reversal of 12538876 is 67883521.

12538876 is an admirable number.

It is a super-2 number, since 2×125388762 = 314446822686752, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12538873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223881 + ... + 223936.

Almost surely, 212538876 is an apocalyptic number.

It is an amenable number.

12538876 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12538876 is a wasteful number, since it uses less digits than its factorization.

12538876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447828 (or 447826 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 12538876 is about 3541.0275344877. The cubic root of 12538876 is about 232.3197878973.

The spelling of 12538876 in words is "twelve million, five hundred thirty-eight thousand, eight hundred seventy-six".

Divisors: 1 2 4 7 14 28 447817 895634 1791268 3134719 6269438 12538876