20338808 has 32 divisors (see below), whose sum is σ = 45480960. Its totient is φ = 8337120.

The previous prime is 20338807. The next prime is 20338837. The reversal of 20338808 is 80883302.

It is a super-2 number, since 2×20338808² = 827334221721728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20338807) 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, 6608 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (1421280).

Almost surely, 2^20338808 is an apocalyptic number.

20338808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20338808 is an abundant number, since it is smaller than the sum of its proper divisors (25142152).

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

20338808 is a wasteful number, since it uses less digits than its factorization.

20338808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15827 (or 15823 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 20338808 is about 4509.8567604748. The cubic root of 20338808 is about 272.9659642613.

The spelling of 20338808 in words is "twenty million, three hundred thirty-eight thousand, eight hundred eight".