20028372 has 48 divisors (see below), whose sum is σ = 57520512. Its totient is φ = 5281920.

The previous prime is 20028347. The next prime is 20028389. The reversal of 20028372 is 27382002.

It is a super-2 number, since 2×20028372² = 802271369940768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8079 + ... + 10262.

It is an arithmetic number, because the mean of its divisors is an integer number (1198344).

Almost surely, 2^20028372 is an apocalyptic number.

It is an amenable number.

20028372 is an abundant number, since it is smaller than the sum of its proper divisors (37492140).

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

20028372 is a wasteful number, since it uses less digits than its factorization.

20028372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18368 (or 18366 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20028372 is about 4475.3069168494. The cubic root of 20028372 is about 271.5700567731.

The spelling of 20028372 in words is "twenty million, twenty-eight thousand, three hundred seventy-two".