20092989900 has 72 divisors (see below), whose sum is σ = 58440259584. Its totient is φ = 5330062400.

The previous prime is 20092989893. The next prime is 20092989923. The reversal of 20092989900 is 998929002.

It is a self number, because there is not a number n which added to its sum of digits gives 20092989900.

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 23 ways as a sum of consecutive naturals, for example, 118032 + ... + 232631.

It is an arithmetic number, because the mean of its divisors is an integer number (811670272).

Almost surely, 2^20092989900 is an apocalyptic number.

20092989900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20092989900 is an abundant number, since it is smaller than the sum of its proper divisors (38347269684).

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

20092989900 is a wasteful number, since it uses less digits than its factorization.

20092989900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350871 (or 350864 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The spelling of 20092989900 in words is "twenty billion, ninety-two million, nine hundred eighty-nine thousand, nine hundred".