12157408 has 24 divisors (see below), whose sum is σ = 24078600. Its totient is φ = 6042240.

The previous prime is 12157391. The next prime is 12157429. The reversal of 12157408 is 80475121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4743 + ... + 6841.

It is an arithmetic number, because the mean of its divisors is an integer number (1003275).

Almost surely, 2^12157408 is an apocalyptic number.

It is an amenable number.

12157408 is a deficient number, since it is larger than the sum of its proper divisors (11921192).

12157408 is a wasteful number, since it uses less digits than its factorization.

12157408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290 (or 2282 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 12157408 is about 3486.7474815363. The cubic root of 12157408 is about 229.9395430261.

The spelling of 12157408 in words is "twelve million, one hundred fifty-seven thousand, four hundred eight".