20330808 has 32 divisors (see below), whose sum is σ = 51475200. Its totient is φ = 6690528.

The previous prime is 20330803. The next prime is 20330819. The reversal of 20330808 is 80803302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330803) 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, 3466 + ... + 7257.

It is an arithmetic number, because the mean of its divisors is an integer number (1608600).

Almost surely, 2^20330808 is an apocalyptic number.

It is an amenable number.

20330808 is an abundant number, since it is smaller than the sum of its proper divisors (31144392).

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

20330808 is a wasteful number, since it uses less digits than its factorization.

20330808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10811 (or 10807 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20330808 is about 4508.9697271106. The cubic root of 20330808 is about 272.9301703889.

The spelling of 20330808 in words is "twenty million, three hundred thirty thousand, eight hundred eight".