20328372 has 36 divisors (see below), whose sum is σ = 52233636. Its totient is φ = 6664320.

The previous prime is 20328367. The next prime is 20328419. The reversal of 20328372 is 27382302.

It can be written as a sum of positive squares in 2 ways, for example, as 933156 + 19395216 = 966^2 + 4404^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2433 + ... + 6824.

Almost surely, 2^20328372 is an apocalyptic number.

It is an amenable number.

20328372 is an abundant number, since it is smaller than the sum of its proper divisors (31905264).

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

20328372 is a wasteful number, since it uses less digits than its factorization.

20328372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9328 (or 9323 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20328372 is about 4508.6995907911. The cubic root of 20328372 is about 272.9192692900.

It can be divided in two parts, 2032 and 8372, that added together give a square (10404 = 102²).

The spelling of 20328372 in words is "twenty million, three hundred twenty-eight thousand, three hundred seventy-two".