18070872 has 32 divisors (see below), whose sum is σ = 45286080. Its totient is φ = 6009120.

The previous prime is 18070867. The next prime is 18070891. The reversal of 18070872 is 27807081.

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, 14847 + ... + 16017.

It is an arithmetic number, because the mean of its divisors is an integer number (1415190).

Almost surely, 2^18070872 is an apocalyptic number.

18070872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18070872 is an abundant number, since it is smaller than the sum of its proper divisors (27215208).

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

18070872 is a wasteful number, since it uses less digits than its factorization.

18070872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 18070872 is about 4250.9848270724. The cubic root of 18070872 is about 262.4176467286.

The spelling of 18070872 in words is "eighteen million, seventy thousand, eight hundred seventy-two".