20328572 has 12 divisors (see below), whose sum is σ = 38809176. Its totient is φ = 9240240.

The previous prime is 20328569. The next prime is 20328589. The reversal of 20328572 is 27582302.

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, 230963 + ... + 231050.

It is an arithmetic number, because the mean of its divisors is an integer number (3234098).

Almost surely, 2^20328572 is an apocalyptic number.

20328572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20328572 is a deficient number, since it is larger than the sum of its proper divisors (18480604).

20328572 is a wasteful number, since it uses less digits than its factorization.

20328572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462028 (or 462026 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 20328572 is about 4508.7217700807. The cubic root of 20328572 is about 272.9201643227.

The spelling of 20328572 in words is "twenty million, three hundred twenty-eight thousand, five hundred seventy-two".