18072190 has 16 divisors (see below), whose sum is σ = 34443792. Its totient is φ = 6803584.

The previous prime is 18072161. The next prime is 18072209. The reversal of 18072190 is 9127081.

It is a super-2 number, since 2×18072190² = 653208102792200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52984 + ... + 53323.

It is an arithmetic number, because the mean of its divisors is an integer number (2152737).

Almost surely, 2^18072190 is an apocalyptic number.

18072190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18072190 is a deficient number, since it is larger than the sum of its proper divisors (16371602).

18072190 is a wasteful number, since it uses less digits than its factorization.

18072190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106331.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 18072190 is about 4251.1398471469. The cubic root of 18072190 is about 262.4240263885.

The spelling of 18072190 in words is "eighteen million, seventy-two thousand, one hundred ninety".