18420192 has 72 divisors (see below), whose sum is σ = 59872176. Its totient is φ = 5262336.

The previous prime is 18420161. The next prime is 18420209. The reversal of 18420192 is 29102481.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2553 + ... + 6584.

It is an arithmetic number, because the mean of its divisors is an integer number (831558).

Almost surely, 2^18420192 is an apocalyptic number.

18420192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18420192 is an abundant number, since it is smaller than the sum of its proper divisors (41451984).

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

18420192 is a wasteful number, since it uses less digits than its factorization.

18420192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9160 (or 9149 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 18420192 is about 4291.8751146789. The cubic root of 18420192 is about 264.0977599380.

The spelling of 18420192 in words is "eighteen million, four hundred twenty thousand, one hundred ninety-two".