18382572 has 48 divisors (see below), whose sum is σ = 51328480. Its totient is φ = 5655744.

The previous prime is 18382547. The next prime is 18382601. The reversal of 18382572 is 27528381.

18382572 is a `hidden beast` number, since 1 + 8 + 3 + 82 + 572 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5143 + ... + 7950.

Almost surely, 2^18382572 is an apocalyptic number.

18382572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18382572 is an abundant number, since it is smaller than the sum of its proper divisors (32945908).

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

18382572 is a wasteful number, since it uses less digits than its factorization.

18382572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13119 (or 13111 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 18382572 is about 4287.4901749159. The cubic root of 18382572 is about 263.9178463382.

The spelling of 18382572 in words is "eighteen million, three hundred eighty-two thousand, five hundred seventy-two".