20368972 has 12 divisors (see below), whose sum is σ = 38387776. Its totient is φ = 9401040.

The previous prime is 20368967. The next prime is 20368979. The reversal of 20368972 is 27986302.

It is not an unprimeable number, because it can be changed into a prime (20368979) by changing a digit.

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, 195804 + ... + 195907.

Almost surely, 2^20368972 is an apocalyptic number.

It is an amenable number.

20368972 is a deficient number, since it is larger than the sum of its proper divisors (18018804).

20368972 is a wasteful number, since it uses less digits than its factorization.

20368972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391728 (or 391726 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 20368972 is about 4513.1997518390. The cubic root of 20368972 is about 273.1008407049.

The spelling of 20368972 in words is "twenty million, three hundred sixty-eight thousand, nine hundred seventy-two".