20896928 has 48 divisors (see below), whose sum is σ = 44706816. Its totient is φ = 9557760.

The previous prime is 20896919. The next prime is 20896951. The reversal of 20896928 is 82969802.

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 7 ways as a sum of consecutive naturals, for example, 79325 + ... + 79587.

It is an arithmetic number, because the mean of its divisors is an integer number (931392).

Almost surely, 2^20896928 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 20896928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22353408).

20896928 is an abundant number, since it is smaller than the sum of its proper divisors (23809888).

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

20896928 is a wasteful number, since it uses less digits than its factorization.

20896928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 20896928 is about 4571.3157843229. The cubic root of 20896928 is about 275.4402996233.

The spelling of 20896928 in words is "twenty million, eight hundred ninety-six thousand, nine hundred twenty-eight".