20324928 has 112 divisors (see below), whose sum is σ = 61447680. Its totient is φ = 5873664.

The previous prime is 20324923. The next prime is 20324929. The reversal of 20324928 is 82942302.

It is a junction number, because it is equal to n+sod(n) for n = 20324895 and 20324904.

It is not an unprimeable number, because it can be changed into a prime (20324921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42193 + ... + 42671.

It is an arithmetic number, because the mean of its divisors is an integer number (548640).

Almost surely, 2^20324928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20324928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30723840).

20324928 is an abundant number, since it is smaller than the sum of its proper divisors (41122752).

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

20324928 is a wasteful number, since it uses less digits than its factorization.

20324928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20324928 is about 4508.3176463067. The cubic root of 20324928 is about 272.9038559053.

The spelling of 20324928 in words is "twenty million, three hundred twenty-four thousand, nine hundred twenty-eight".