18472808 has 16 divisors (see below), whose sum is σ = 34689060. Its totient is φ = 9222400.

The previous prime is 18472789. The next prime is 18472823. The reversal of 18472808 is 80827481.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18472804 + 4 = 4298^2 + 2^2 .

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, 5738 + ... + 8358.

Almost surely, 2^18472808 is an apocalyptic number.

It is an amenable number.

18472808 is a deficient number, since it is larger than the sum of its proper divisors (16216252).

18472808 is a wasteful number, since it uses less digits than its factorization.

18472808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508 (or 3504 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 18472808 is about 4298.0004653327. Note that the first 3 decimals coincide. The cubic root of 18472808 is about 264.3489798661.

The spelling of 18472808 in words is "eighteen million, four hundred seventy-two thousand, eight hundred eight".