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12924880 = 245161561
BaseRepresentation
bin110001010011…
…011111010000
3220022122121021
4301103133100
511302044010
61141005224
7214600603
oct61233720
926278537
1012924880
117328721
1243b3814
1328a6c77
141a0633a
1512048da
hexc537d0

12924880 has 20 divisors (see below), whose sum is σ = 30050532. Its totient is φ = 5169920.

The previous prime is 12924871. The next prime is 12924887. The reversal of 12924880 is 8842921.

12924880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6330256 + 6594624 = 2516^2 + 2568^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12924887) 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, 80701 + ... + 80860.

Almost surely, 212924880 is an apocalyptic number.

12924880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12924880 is an abundant number, since it is smaller than the sum of its proper divisors (17125652).

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

12924880 is a wasteful number, since it uses less digits than its factorization.

12924880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161574 (or 161568 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 12924880 is about 3595.1189131933. The cubic root of 12924880 is about 234.6796903642.

The spelling of 12924880 in words is "twelve million, nine hundred twenty-four thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 161561 323122 646244 807805 1292488 1615610 2584976 3231220 6462440 12924880