18885072 has 40 divisors (see below), whose sum is σ = 49255776. Its totient is φ = 6234496.

The previous prime is 18885067. The next prime is 18885103. The reversal of 18885072 is 27058881.

It is a self number, because there is not a number n which added to its sum of digits gives 18885072.

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, 3298 + ... + 6974.

Almost surely, 2^18885072 is an apocalyptic number.

18885072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18885072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24627888).

18885072 is an abundant number, since it is smaller than the sum of its proper divisors (30370704).

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

18885072 is a wasteful number, since it uses less digits than its factorization.

18885072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795 (or 3789 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 18885072 is about 4345.6958015950. The cubic root of 18885072 is about 266.3010517283.

The spelling of 18885072 in words is "eighteen million, eight hundred eighty-five thousand, seventy-two".