18872396 has 24 divisors (see below), whose sum is σ = 34944000. Its totient is φ = 8893584.

The previous prime is 18872317. The next prime is 18872407. The reversal of 18872396 is 69327881.

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, 17645 + ... + 18683.

It is an arithmetic number, because the mean of its divisors is an integer number (1456000).

Almost surely, 2^18872396 is an apocalyptic number.

It is an amenable number.

18872396 is a deficient number, since it is larger than the sum of its proper divisors (16071604).

18872396 is a wasteful number, since it uses less digits than its factorization.

18872396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1299 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 18872396 is about 4344.2371021849. The cubic root of 18872396 is about 266.2414563739.

The spelling of 18872396 in words is "eighteen million, eight hundred seventy-two thousand, three hundred ninety-six".