18972632 has 32 divisors (see below), whose sum is σ = 41606400. Its totient is φ = 7941024.

The previous prime is 18972623. The next prime is 18972637. The reversal of 18972632 is 23627981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18972637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1532 + ... + 6347.

It is an arithmetic number, because the mean of its divisors is an integer number (1300200).

Almost surely, 2^18972632 is an apocalyptic number.

It is an amenable number.

18972632 is an abundant number, since it is smaller than the sum of its proper divisors (22633768).

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

18972632 is a wasteful number, since it uses less digits than its factorization.

18972632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7935 (or 7931 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 18972632 is about 4355.7584873360. The cubic root of 18972632 is about 266.7119825766.

The spelling of 18972632 in words is "eighteen million, nine hundred seventy-two thousand, six hundred thirty-two".