20303879400 has 144 divisors (see below), whose sum is σ = 77928271200. Its totient is φ = 4640883840.

The previous prime is 20303879377. The next prime is 20303879413. The reversal of 20303879400 is 497830302.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 793110 + ... + 818309.

It is an arithmetic number, because the mean of its divisors is an integer number (541168550).

Almost surely, 2^20303879400 is an apocalyptic number.

20303879400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303879400 is an abundant number, since it is smaller than the sum of its proper divisors (57624391800).

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

20303879400 is a wasteful number, since it uses less digits than its factorization.

20303879400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611448 (or 1611436 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 20303879400 in words is "twenty billion, three hundred three million, eight hundred seventy-nine thousand, four hundred".