20238100 has 18 divisors (see below), whose sum is σ = 43916894. Its totient is φ = 8095200.

The previous prime is 20238089. The next prime is 20238131. The reversal of 20238100 is 183202.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4588164 + 15649936 = 2142^2 + 3956^2 .

It is a super-2 number, since 2×20238100² = 819161383220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101091 + ... + 101290.

Almost surely, 2^20238100 is an apocalyptic number.

20238100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20238100 is an abundant number, since it is smaller than the sum of its proper divisors (23678794).

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

20238100 is a wasteful number, since it uses less digits than its factorization.

20238100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202395 (or 202388 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20238100 is about 4498.6775834683. The cubic root of 20238100 is about 272.5146865243.

The spelling of 20238100 in words is "twenty million, two hundred thirty-eight thousand, one hundred".