20968828 has 12 divisors (see below), whose sum is σ = 36747592. Its totient is φ = 10469520.

The previous prime is 20968817. The next prime is 20968841. The reversal of 20968828 is 82886902.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 183 + ... + 6478.

Almost surely, 2^20968828 is an apocalyptic number.

It is an amenable number.

20968828 is a deficient number, since it is larger than the sum of its proper divisors (15778764).

20968828 is a wasteful number, since it uses less digits than its factorization.

20968828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7452 (or 7450 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 20968828 is about 4579.1732878326. The cubic root of 20968828 is about 275.7558402216.

The spelling of 20968828 in words is "twenty million, nine hundred sixty-eight thousand, eight hundred twenty-eight".