18102912 has 32 divisors (see below), whose sum is σ = 48086880. Its totient is φ = 6034176.

The previous prime is 18102907. The next prime is 18102913. The reversal of 18102912 is 21920181.

It is a tau number, because it is divible by the number of its divisors (32).

It is a hoax number, since the sum of its digits (24) 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 (24).

It is not an unprimeable number, because it can be changed into a prime (18102913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23188 + ... + 23955.

It is an arithmetic number, because the mean of its divisors is an integer number (1502715).

Almost surely, 2^18102912 is an apocalyptic number.

18102912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18102912 is an abundant number, since it is smaller than the sum of its proper divisors (29983968).

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

18102912 is an equidigital number, since it uses as much as digits as its factorization.

18102912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47160 (or 47148 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 18102912 is about 4254.7516966328. The cubic root of 18102912 is about 262.5726456534.

The spelling of 18102912 in words is "eighteen million, one hundred two thousand, nine hundred twelve".