20328624 has 40 divisors (see below), whose sum is σ = 58351920. Its totient is φ = 6776064.

The previous prime is 20328589. The next prime is 20328629. The reversal of 20328624 is 42682302.

20328624 is a `hidden beast` number, since 2 + 0 + 32 + 8 + 624 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20328629) 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, 23097 + ... + 23960.

It is an arithmetic number, because the mean of its divisors is an integer number (1458798).

Almost surely, 2^20328624 is an apocalyptic number.

20328624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20328624 is an abundant number, since it is smaller than the sum of its proper divisors (38023296).

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

20328624 is a wasteful number, since it uses less digits than its factorization.

20328624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47074 (or 47062 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20328624 is about 4508.7275366782. The cubic root of 20328624 is about 272.9203970302.

The spelling of 20328624 in words is "twenty million, three hundred twenty-eight thousand, six hundred twenty-four".