20231928 has 48 divisors (see below), whose sum is σ = 55002480. Its totient is φ = 6718464.

The previous prime is 20231909. The next prime is 20231929. The reversal of 20231928 is 82913202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34776 + ... + 35352.

It is an arithmetic number, because the mean of its divisors is an integer number (1145885).

Almost surely, 2^20231928 is an apocalyptic number.

It is an amenable number.

20231928 is an abundant number, since it is smaller than the sum of its proper divisors (34770552).

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

20231928 is a wasteful number, since it uses less digits than its factorization.

20231928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20231928 is about 4497.9915517929. The cubic root of 20231928 is about 272.4869808330.

The spelling of 20231928 in words is "twenty million, two hundred thirty-one thousand, nine hundred twenty-eight".