12579881 has 24 divisors (see below), whose sum is σ = 14736000. Its totient is φ = 10692864.

The previous prime is 12579877. The next prime is 12579887. The reversal of 12579881 is 18897521.

It is not a de Polignac number, because 12579881 - 2² = 12579877 is a prime.

It is a super-2 number, since 2×12579881² = 316506811948322, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (40320) is a multiple of the sum of its prime divisors (144).

It is not an unprimeable number, because it can be changed into a prime (12579887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159200 + ... + 159278.

It is an arithmetic number, because the mean of its divisors is an integer number (614000).

Almost surely, 2^12579881 is an apocalyptic number.

It is an amenable number.

12579881 is a deficient number, since it is larger than the sum of its proper divisors (2156119).

12579881 is a wasteful number, since it uses less digits than its factorization.

12579881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 144 counting only the distinct ones).

The product of its digits is 40320, while the sum is 41.

The square root of 12579881 is about 3546.8127946087. The cubic root of 12579881 is about 232.5727586676.

The spelling of 12579881 in words is "twelve million, five hundred seventy-nine thousand, eight hundred eighty-one".