239908428 has 36 divisors (see below), whose sum is σ = 606905208. Its totient is φ = 79907520.

The previous prime is 239908397. The next prime is 239908447. The reversal of 239908428 is 824809932.

239908428 is digitally balanced in base 2, 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 (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89800 + ... + 92432.

It is an arithmetic number, because the mean of its divisors is an integer number (16858478).

Almost surely, 2^239908428 is an apocalyptic number.

It is an amenable number.

239908428 is an abundant number, since it is smaller than the sum of its proper divisors (366996780).

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

239908428 is a wasteful number, since it uses less digits than its factorization.

239908428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5174 (or 5169 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 239908428 is about 15488.9776292691. The cubic root of 239908428 is about 621.3674534989.

The spelling of 239908428 in words is "two hundred thirty-nine million, nine hundred eight thousand, four hundred twenty-eight".