18112072 has 32 divisors (see below), whose sum is σ = 39229920. Its totient is φ = 7747840.

The previous prime is 18112019. The next prime is 18112121. The reversal of 18112072 is 27021181.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 4558 + ... + 7549.

It is an arithmetic number, because the mean of its divisors is an integer number (1225935).

Almost surely, 2^18112072 is an apocalyptic number.

It is an amenable number.

18112072 is an abundant number, since it is smaller than the sum of its proper divisors (21117848).

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

18112072 is a wasteful number, since it uses less digits than its factorization.

18112072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12141 (or 12137 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 18112072 is about 4255.8280040434. The cubic root of 18112072 is about 262.6169250835.

It can be divided in two parts, 1811 and 2072, that added together give a palindrome (3883).

The spelling of 18112072 in words is "eighteen million, one hundred twelve thousand, seventy-two".