20272120 has 32 divisors (see below), whose sum is σ = 49759920. Its totient is φ = 7371520.

The previous prime is 20272117. The next prime is 20272157. The reversal of 20272120 is 2127202.

It is a junction number, because it is equal to n+sod(n) for n = 20272094 and 20272103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22597 + ... + 23476.

Almost surely, 2^20272120 is an apocalyptic number.

20272120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20272120 is an abundant number, since it is smaller than the sum of its proper divisors (29487800).

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

20272120 is a wasteful number, since it uses less digits than its factorization.

20272120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46095 (or 46091 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 20272120 is about 4502.4571069584. The cubic root of 20272120 is about 272.6672990011.

Adding to 20272120 its reverse (2127202), we get a palindrome (22399322).

The spelling of 20272120 in words is "twenty million, two hundred seventy-two thousand, one hundred twenty".