239401228 has 12 divisors (see below), whose sum is σ = 457038792. Its totient is φ = 108818720.

The previous prime is 239401207. The next prime is 239401247. The reversal of 239401228 is 822104932.

It is a self number, because there is not a number n which added to its sum of digits gives 239401228.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720425 + ... + 2720512.

It is an arithmetic number, because the mean of its divisors is an integer number (38086566).

Almost surely, 2^239401228 is an apocalyptic number.

It is an amenable number.

239401228 is a deficient number, since it is larger than the sum of its proper divisors (217637564).

239401228 is a wasteful number, since it uses less digits than its factorization.

239401228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5440952 (or 5440950 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 239401228 is about 15472.5960329868. The cubic root of 239401228 is about 620.9292586259.

The spelling of 239401228 in words is "two hundred thirty-nine million, four hundred one thousand, two hundred twenty-eight".