18806672 has 10 divisors (see below), whose sum is σ = 36437958. Its totient is φ = 9403328.

The previous prime is 18806633. The next prime is 18806687. The reversal of 18806672 is 27660881.

It can be written as a sum of positive squares in only one way, i.e., 18800896 + 5776 = 4336^2 + 76^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 587693 + ... + 587724.

Almost surely, 2^18806672 is an apocalyptic number.

It is an amenable number.

18806672 is a deficient number, since it is larger than the sum of its proper divisors (17631286).

18806672 is a wasteful number, since it uses less digits than its factorization.

18806672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175425 (or 1175419 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 18806672 is about 4336.6660005124. Note that the first 3 decimals coincide. The cubic root of 18806672 is about 265.9320307993.

The spelling of 18806672 in words is "eighteen million, eight hundred six thousand, six hundred seventy-two".