239390540 has 48 divisors (see below), whose sum is σ = 514375680. Its totient is φ = 93562560.

The previous prime is 239390539. The next prime is 239390581. The reversal of 239390540 is 45093932.

239390540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 239390540.

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, 162005 + ... + 163475.

It is an arithmetic number, because the mean of its divisors is an integer number (10716160).

Almost surely, 2^239390540 is an apocalyptic number.

239390540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

239390540 is an abundant number, since it is smaller than the sum of its proper divisors (274985140).

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

239390540 is a wasteful number, since it uses less digits than its factorization.

239390540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662 (or 1660 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 239390540 is about 15472.2506442987. The cubic root of 239390540 is about 620.9200180848.

The spelling of 239390540 in words is "two hundred thirty-nine million, three hundred ninety thousand, five hundred forty".