20589900 has 36 divisors (see below), whose sum is σ = 59574312. Its totient is φ = 5490560.

The previous prime is 20589857. The next prime is 20589911. The reversal of 20589900 is 998502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34017 + ... + 34616.

It is an arithmetic number, because the mean of its divisors is an integer number (1654842).

Almost surely, 2^20589900 is an apocalyptic number.

20589900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20589900 is an abundant number, since it is smaller than the sum of its proper divisors (38984412).

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

20589900 is a wasteful number, since it uses less digits than its factorization.

20589900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68650 (or 68643 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 20589900 is about 4537.6095028109. The cubic root of 20589900 is about 274.0846702294.

The spelling of 20589900 in words is "twenty million, five hundred eighty-nine thousand, nine hundred".