239928240 has 80 divisors (see below), whose sum is σ = 750809088. Its totient is φ = 63376128.

The previous prime is 239928229. The next prime is 239928253. The reversal of 239928240 is 42829932.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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, 21009 + ... + 30351.

Almost surely, 2^239928240 is an apocalyptic number.

239928240 is a gapful number since it is divisible by the number (20) 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 239928240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375404544).

239928240 is an abundant number, since it is smaller than the sum of its proper divisors (510880848).

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

239928240 is a wasteful number, since it uses less digits than its factorization.

239928240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9466 (or 9460 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 239928240 is about 15489.6171676385. The cubic root of 239928240 is about 621.3845575154.

The spelling of 239928240 in words is "two hundred thirty-nine million, nine hundred twenty-eight thousand, two hundred forty".