20107900 has 36 divisors (see below), whose sum is σ = 43872192. Its totient is φ = 7999360.

The previous prime is 20107897. The next prime is 20107931. The reversal of 20107900 is 970102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22869 + ... + 23731.

It is an arithmetic number, because the mean of its divisors is an integer number (1218672).

Almost surely, 2^20107900 is an apocalyptic number.

20107900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20107900 is an abundant number, since it is smaller than the sum of its proper divisors (23764292).

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

20107900 is a wasteful number, since it uses less digits than its factorization.

20107900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 20107900 is about 4484.1833147185. The cubic root of 20107900 is about 271.9290292058.

The spelling of 20107900 in words is "twenty million, one hundred seven thousand, nine hundred".