82507239 has 24 divisors (see below), whose sum is σ = 129132432. Its totient is φ = 50561280.

The previous prime is 82507219. The next prime is 82507241. The reversal of 82507239 is 93270528.

It is a happy number.

It is not a de Polignac number, because 82507239 - 2⁵ = 82507207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82507219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309 + ... + 12849.

It is an arithmetic number, because the mean of its divisors is an integer number (5380518).

Almost surely, 2^82507239 is an apocalyptic number.

82507239 is a deficient number, since it is larger than the sum of its proper divisors (46625193).

82507239 is a wasteful number, since it uses less digits than its factorization.

82507239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12607 (or 12604 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 82507239 is about 9083.3495473861. The cubic root of 82507239 is about 435.3421169112.

The spelling of 82507239 in words is "eighty-two million, five hundred seven thousand, two hundred thirty-nine".