239628928 has 128 divisors (see below), whose sum is σ = 610727040. Its totient is φ = 90931200.

The previous prime is 239628899. The next prime is 239628937. The reversal of 239628928 is 829826932.

239628928 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403800 + ... + 404392.

It is an arithmetic number, because the mean of its divisors is an integer number (4771305).

Almost surely, 2^239628928 is an apocalyptic number.

239628928 is a gapful number since it is divisible by the number (28) 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 239628928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305363520).

239628928 is an abundant number, since it is smaller than the sum of its proper divisors (371098112).

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

239628928 is a wasteful number, since it uses less digits than its factorization.

239628928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 654 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The square root of 239628928 is about 15479.9524547073. The cubic root of 239628928 is about 621.1260562670.

The spelling of 239628928 in words is "two hundred thirty-nine million, six hundred twenty-eight thousand, nine hundred twenty-eight".