239648820 has 24 divisors (see below), whose sum is σ = 671016864. Its totient is φ = 63906336.

The previous prime is 239648819. The next prime is 239648821. The reversal of 239648820 is 28846932.

239648820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (239648819) and next prime (239648821).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239648821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997014 + ... + 1997133.

It is an arithmetic number, because the mean of its divisors is an integer number (27959036).

Almost surely, 2^239648820 is an apocalyptic number.

239648820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

239648820 is an abundant number, since it is smaller than the sum of its proper divisors (431368044).

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

239648820 is a wasteful number, since it uses less digits than its factorization.

239648820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994159 (or 3994157 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 239648820 is about 15480.5949498073. The cubic root of 239648820 is about 621.1432426974.

The spelling of 239648820 in words is "two hundred thirty-nine million, six hundred forty-eight thousand, eight hundred twenty".