20272788 has 24 divisors (see below), whose sum is σ = 52559360. Its totient is φ = 6757560.

The previous prime is 20272787. The next prime is 20272831. The reversal of 20272788 is 88727202.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20272783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93748 + ... + 93963.

Almost surely, 2^20272788 is an apocalyptic number.

It is an amenable number.

20272788 is an abundant number, since it is smaller than the sum of its proper divisors (32286572).

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

20272788 is a wasteful number, since it uses less digits than its factorization.

20272788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187724 (or 187716 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 20272788 is about 4502.5312880645. The cubic root of 20272788 is about 272.6702939149.

The spelling of 20272788 in words is "twenty million, two hundred seventy-two thousand, seven hundred eighty-eight".