239231340 has 144 divisors (see below), whose sum is σ = 770726880. Its totient is φ = 61603200.

The previous prime is 239231329. The next prime is 239231357. The reversal of 239231340 is 43132932.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 518710 + ... + 519170.

It is an arithmetic number, because the mean of its divisors is an integer number (5352270).

Almost surely, 2^239231340 is an apocalyptic number.

239231340 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 239231340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385363440).

239231340 is an abundant number, since it is smaller than the sum of its proper divisors (531495540).

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

239231340 is a wasteful number, since it uses less digits than its factorization.

239231340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 239231340 is about 15467.1050943607. The cubic root of 239231340 is about 620.7823457168.

The spelling of 239231340 in words is "two hundred thirty-nine million, two hundred thirty-one thousand, three hundred forty".