18112572 has 30 divisors (see below), whose sum is σ = 47350688. Its totient is φ = 6037416.

The previous prime is 18112553. The next prime is 18112583. The reversal of 18112572 is 27521181.

18112572 is a `hidden beast` number, since 1 + 81 + 12 + 572 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 27628 + ... + 28275.

Almost surely, 2^18112572 is an apocalyptic number.

18112572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18112572 is an abundant number, since it is smaller than the sum of its proper divisors (29238116).

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

18112572 is a wasteful number, since it uses less digits than its factorization.

18112572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55919 (or 55908 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 18112572 is about 4255.8867466134. The cubic root of 18112572 is about 262.6193416533.

The spelling of 18112572 in words is "eighteen million, one hundred twelve thousand, five hundred seventy-two".