20238072 has 16 divisors (see below), whose sum is σ = 50595240. Its totient is φ = 6746016.

The previous prime is 20238067. The next prime is 20238073. The reversal of 20238072 is 27083202.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 843253 = 20238072 / (2 + 0 + 2 + 3 + 8 + 0 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20238073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421603 + ... + 421650.

Almost surely, 2^20238072 is an apocalyptic number.

It is an amenable number.

20238072 is an abundant number, since it is smaller than the sum of its proper divisors (30357168).

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

20238072 is a wasteful number, since it uses less digits than its factorization.

20238072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843262 (or 843258 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20238072 is about 4498.6744714416. The cubic root of 20238072 is about 272.5145608469.

The spelling of 20238072 in words is "twenty million, two hundred thirty-eight thousand, seventy-two".