20900750 has 64 divisors (see below), whose sum is σ = 43243200. Its totient is φ = 7516800.

The previous prime is 20900749. The next prime is 20900753. The reversal of 20900750 is 5700902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20900753) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191696 + ... + 191804.

It is an arithmetic number, because the mean of its divisors is an integer number (675675).

Almost surely, 2^20900750 is an apocalyptic number.

20900750 is an abundant number, since it is smaller than the sum of its proper divisors (22342450).

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

20900750 is a wasteful number, since it uses less digits than its factorization.

20900750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 20900750 is about 4571.7338067740. The cubic root of 20900750 is about 275.4570910651.

The spelling of 20900750 in words is "twenty million, nine hundred thousand, seven hundred fifty".