18986072 has 32 divisors (see below), whose sum is σ = 40914720. Its totient is φ = 8090880.

The previous prime is 18986057. The next prime is 18986083. The reversal of 18986072 is 27068981.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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, 10172 + ... + 11892.

It is an arithmetic number, because the mean of its divisors is an integer number (1278585).

Almost surely, 2^18986072 is an apocalyptic number.

It is an amenable number.

18986072 is an abundant number, since it is smaller than the sum of its proper divisors (21928648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18986072 is a wasteful number, since it uses less digits than its factorization.

18986072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931 (or 1927 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 18986072 is about 4357.3009994720. The cubic root of 18986072 is about 266.7749463050.

The spelling of 18986072 in words is "eighteen million, nine hundred eighty-six thousand, seventy-two".