239130840 has 256 divisors, whose sum is σ = 836075520. Its totient is φ = 54190080.

The previous prime is 239130821. The next prime is 239130841. The reversal of 239130840 is 48031932.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 239130798 and 239130807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239130841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1882857 + ... + 1882983.

It is an arithmetic number, because the mean of its divisors is an integer number (3265920).

Almost surely, 2^239130840 is an apocalyptic number.

239130840 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 239130840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418037760).

239130840 is an abundant number, since it is smaller than the sum of its proper divisors (596944680).

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

239130840 is a wasteful number, since it uses less digits than its factorization.

239130840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 239130840 is about 15463.8559227639. The cubic root of 239130840 is about 620.6954042592.

The spelling of 239130840 in words is "two hundred thirty-nine million, one hundred thirty thousand, eight hundred forty".