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12880364 = 227460013
BaseRepresentation
bin110001001000…
…100111101100
3220020101112112
4301020213230
511244132424
61140023152
7214324040
oct61104754
926211475
1012880364
1172a8232
124391ab8
13288c923
1419d4020
1511e660e
hexc489ec

12880364 has 12 divisors (see below), whose sum is σ = 25760784. Its totient is φ = 5520144.

The previous prime is 12880337. The next prime is 12880393. The reversal of 12880364 is 46308821.

12880364 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12880364.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229979 + ... + 230034.

It is an arithmetic number, because the mean of its divisors is an integer number (2146732).

Almost surely, 212880364 is an apocalyptic number.

12880364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12880364 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.

12880364 is a wasteful number, since it uses less digits than its factorization.

12880364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460024 (or 460022 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 12880364 is about 3588.9224009443. The cubic root of 12880364 is about 234.4099517416.

The spelling of 12880364 in words is "twelve million, eight hundred eighty thousand, three hundred sixty-four".

Divisors: 1 2 4 7 14 28 460013 920026 1840052 3220091 6440182 12880364