18061372 has 12 divisors (see below), whose sum is σ = 36122800. Its totient is φ = 7740576.

The previous prime is 18061367. The next prime is 18061427. The reversal of 18061372 is 27316081.

18061372 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 645049 = 18061372 / (1 + 8 + 0 + 6 + 1 + 3 + 7 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 18061372.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322497 + ... + 322552.

Almost surely, 2^18061372 is an apocalyptic number.

It is an amenable number.

18061372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18061372 is a wasteful number, since it uses less digits than its factorization.

18061372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645060 (or 645058 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 18061372 is about 4249.8672920457. The cubic root of 18061372 is about 262.3716536589.

The spelling of 18061372 in words is "eighteen million, sixty-one thousand, three hundred seventy-two".