18677072 has 10 divisors (see below), whose sum is σ = 36186858. Its totient is φ = 9338528.

The previous prime is 18677069. The next prime is 18677089. The reversal of 18677072 is 27077681.

It can be written as a sum of positive squares in only one way, i.e., 12645136 + 6031936 = 3556^2 + 2456^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583643 + ... + 583674.

Almost surely, 2^18677072 is an apocalyptic number.

It is an amenable number.

18677072 is a deficient number, since it is larger than the sum of its proper divisors (17509786).

18677072 is a wasteful number, since it uses less digits than its factorization.

18677072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167325 (or 1167319 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 18677072 is about 4321.6978145169. The cubic root of 18677072 is about 265.3197611524.

The spelling of 18677072 in words is "eighteen million, six hundred seventy-seven thousand, seventy-two".