18572038 has 16 divisors (see below), whose sum is σ = 29168640. Its totient is φ = 8857800.

The previous prime is 18572011. The next prime is 18572077. The reversal of 18572038 is 83027581.

It is a junction number, because it is equal to n+sod(n) for n = 18571994 and 18572012.

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 7 ways as a sum of consecutive naturals, for example, 2293 + ... + 6511.

It is an arithmetic number, because the mean of its divisors is an integer number (1823040).

Almost surely, 2^18572038 is an apocalyptic number.

18572038 is a deficient number, since it is larger than the sum of its proper divisors (10596602).

18572038 is a wasteful number, since it uses less digits than its factorization.

18572038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 18572038 is about 4309.5287445381. The cubic root of 18572038 is about 264.8214675020.

The spelling of 18572038 in words is "eighteen million, five hundred seventy-two thousand, thirty-eight".