20748808 has 32 divisors (see below), whose sum is σ = 40118400. Its totient is φ = 10055232.

The previous prime is 20748803. The next prime is 20748809. The reversal of 20748808 is 80884702.

It is not an unprimeable number, because it can be changed into a prime (20748803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52066 + ... + 52462.

It is an arithmetic number, because the mean of its divisors is an integer number (1253700).

Almost surely, 2^20748808 is an apocalyptic number.

It is an amenable number.

20748808 is a deficient number, since it is larger than the sum of its proper divisors (19369592).

20748808 is a wasteful number, since it uses less digits than its factorization.

20748808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 20748808 is about 4555.0859486952. The cubic root of 20748808 is about 274.7879709998.

The spelling of 20748808 in words is "twenty million, seven hundred forty-eight thousand, eight hundred eight".