12879420 has 24 divisors (see below), whose sum is σ = 36062544. Its totient is φ = 3434496.

The previous prime is 12879409. The next prime is 12879437. The reversal of 12879420 is 2497821.

It is a happy number.

It is a congruent number.

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, 107269 + ... + 107388.

It is an arithmetic number, because the mean of its divisors is an integer number (1502606).

Almost surely, 2^12879420 is an apocalyptic number.

12879420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12879420 is an abundant number, since it is smaller than the sum of its proper divisors (23183124).

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

12879420 is a wasteful number, since it uses less digits than its factorization.

12879420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214669 (or 214667 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 12879420 is about 3588.7908827347. The cubic root of 12879420 is about 234.4042249779.

The spelling of 12879420 in words is "twelve million, eight hundred seventy-nine thousand, four hundred twenty".