239231420 has 24 divisors (see below), whose sum is σ = 505764000. Its totient is φ = 95049152.

The previous prime is 239231417. The next prime is 239231431. The reversal of 239231420 is 24132932.

It is a self number, because there is not a number n which added to its sum of digits gives 239231420.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 37160 + ... + 43119.

It is an arithmetic number, because the mean of its divisors is an integer number (21073500).

Almost surely, 2^239231420 is an apocalyptic number.

239231420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

239231420 is an abundant number, since it is smaller than the sum of its proper divisors (266532580).

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

239231420 is a wasteful number, since it uses less digits than its factorization.

239231420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80437 (or 80435 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 239231420 is about 15467.1076804941. The cubic root of 239231420 is about 620.7824149142.

The spelling of 239231420 in words is "two hundred thirty-nine million, two hundred thirty-one thousand, four hundred twenty".