239625540 has 480 divisors, whose sum is σ = 1001113344. Its totient is φ = 46448640.

The previous prime is 239625499. The next prime is 239625559. The reversal of 239625540 is 45526932.

239625540 is a `hidden beast` number, since 2 + 3 + 96 + 25 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 239625495 and 239625504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 2120524 + ... + 2120636.

Almost surely, 2^239625540 is an apocalyptic number.

239625540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239625540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500556672).

239625540 is an abundant number, since it is smaller than the sum of its proper divisors (761487804).

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

239625540 is a wasteful number, since it uses less digits than its factorization.

239625540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 239625540 is about 15479.8430224599. The cubic root of 239625540 is about 621.1231289841.

The spelling of 239625540 in words is "two hundred thirty-nine million, six hundred twenty-five thousand, five hundred forty".