18572732 has 12 divisors (see below), whose sum is σ = 33258456. Its totient is φ = 9070320.

The previous prime is 18572717. The next prime is 18572759. The reversal of 18572732 is 23727581.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18572692 and 18572701.

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, 53819 + ... + 54162.

It is an arithmetic number, because the mean of its divisors is an integer number (2771538).

Almost surely, 2^18572732 is an apocalyptic number.

It is an amenable number.

18572732 is a deficient number, since it is larger than the sum of its proper divisors (14685724).

18572732 is a wasteful number, since it uses less digits than its factorization.

18572732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108028 (or 108026 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 18572732 is about 4309.6092630307. The cubic root of 18572732 is about 264.8247660775.

The spelling of 18572732 in words is "eighteen million, five hundred seventy-two thousand, seven hundred thirty-two".