20802388 has 12 divisors (see below), whose sum is σ = 37179072. Its totient is φ = 10179800.

The previous prime is 20802371. The next prime is 20802391. The reversal of 20802388 is 88320802.

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, 55138 + ... + 55513.

It is an arithmetic number, because the mean of its divisors is an integer number (3098256).

Almost surely, 2^20802388 is an apocalyptic number.

It is an amenable number.

20802388 is a deficient number, since it is larger than the sum of its proper divisors (16376684).

20802388 is a wasteful number, since it uses less digits than its factorization.

20802388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110702 (or 110700 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 20802388 is about 4560.9634947015. The cubic root of 20802388 is about 275.0242975776.

The spelling of 20802388 in words is "twenty million, eight hundred two thousand, three hundred eighty-eight".