20238120 has 128 divisors (see below), whose sum is σ = 77126400. Its totient is φ = 4624128.

The previous prime is 20238089. The next prime is 20238131. The reversal of 20238120 is 2183202.

It is a happy number.

It is a super-2 number, since 2×20238120² = 819163002268800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20238093 and 20238102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6222 + ... + 8898.

It is an arithmetic number, because the mean of its divisors is an integer number (602550).

Almost surely, 2^20238120 is an apocalyptic number.

20238120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20238120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38563200).

20238120 is an abundant number, since it is smaller than the sum of its proper divisors (56888280).

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

20238120 is a wasteful number, since it uses less digits than its factorization.

20238120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704 (or 2694 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20238120 is about 4498.6798063432. The cubic root of 20238120 is about 272.5147762938.

The spelling of 20238120 in words is "twenty million, two hundred thirty-eight thousand, one hundred twenty".