18130072 has 16 divisors (see below), whose sum is σ = 35472240. Its totient is φ = 8670816.

The previous prime is 18130069. The next prime is 18130087. The reversal of 18130072 is 27003181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49083 + ... + 49450.

It is an arithmetic number, because the mean of its divisors is an integer number (2217015).

Almost surely, 2^18130072 is an apocalyptic number.

It is an amenable number.

18130072 is a deficient number, since it is larger than the sum of its proper divisors (17342168).

18130072 is a wasteful number, since it uses less digits than its factorization.

18130072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98562 (or 98558 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 18130072 is about 4257.9422260054. The cubic root of 18130072 is about 262.7038935902.

The spelling of 18130072 in words is "eighteen million, one hundred thirty thousand, seventy-two".