12879280 has 40 divisors (see below), whose sum is σ = 30132000. Its totient is φ = 5119488.

The previous prime is 12879259. The next prime is 12879301. The reversal of 12879280 is 8297821.

It is an interprime number because it is at equal distance from previous prime (12879259) and next prime (12879301).

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15516 + ... + 16324.

It is an arithmetic number, because the mean of its divisors is an integer number (753300).

Almost surely, 2^12879280 is an apocalyptic number.

12879280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12879280 is an abundant number, since it is smaller than the sum of its proper divisors (17252720).

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

12879280 is a wasteful number, since it uses less digits than its factorization.

12879280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 12879280 is about 3588.7713775051. The cubic root of 12879280 is about 234.4033756459.

The spelling of 12879280 in words is "twelve million, eight hundred seventy-nine thousand, two hundred eighty".