18856412 has 24 divisors (see below), whose sum is σ = 34804896. Its totient is φ = 8921088.

The previous prime is 18856391. The next prime is 18856469. The reversal of 18856412 is 21465881.

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, 7868 + ... + 9980.

It is an arithmetic number, because the mean of its divisors is an integer number (1450204).

Almost surely, 2^18856412 is an apocalyptic number.

It is an amenable number.

18856412 is a deficient number, since it is larger than the sum of its proper divisors (15948484).

18856412 is a wasteful number, since it uses less digits than its factorization.

18856412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237 (or 2235 counting only the distinct ones).

The product of its digits is 15360, while the sum is 35.

The square root of 18856412 is about 4342.3970338973. The cubic root of 18856412 is about 266.1662706294.

The spelling of 18856412 in words is "eighteen million, eight hundred fifty-six thousand, four hundred twelve".