18071432 has 16 divisors (see below), whose sum is σ = 35667600. Its totient is φ = 8560080.

The previous prime is 18071411. The next prime is 18071461. The reversal of 18071432 is 23417081.

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 3 ways as a sum of consecutive naturals, for example, 59294 + ... + 59597.

It is an arithmetic number, because the mean of its divisors is an integer number (2229225).

Almost surely, 2^18071432 is an apocalyptic number.

It is an amenable number.

18071432 is a deficient number, since it is larger than the sum of its proper divisors (17596168).

18071432 is a wasteful number, since it uses less digits than its factorization.

18071432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118916 (or 118912 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 18071432 is about 4251.0506936521. The cubic root of 18071432 is about 262.4203573959.

The spelling of 18071432 in words is "eighteen million, seventy-one thousand, four hundred thirty-two".