20928496 has 20 divisors (see below), whose sum is σ = 42934752. Its totient is φ = 9848576.

The previous prime is 20928473. The next prime is 20928499. The reversal of 20928496 is 69482902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20928499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38200 + ... + 38743.

Almost surely, 2^20928496 is an apocalyptic number.

It is an amenable number.

20928496 is an abundant number, since it is smaller than the sum of its proper divisors (22006256).

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

20928496 is a wasteful number, since it uses less digits than its factorization.

20928496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76968 (or 76962 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 20928496 is about 4574.7673164873. The cubic root of 20928496 is about 275.5789280479.

The spelling of 20928496 in words is "twenty million, nine hundred twenty-eight thousand, four hundred ninety-six".