82239438 has 16 divisors (see below), whose sum is σ = 174154320. Its totient is φ = 25800576.

The previous prime is 82239433. The next prime is 82239457. The reversal of 82239438 is 83493228.

It is a junction number, because it is equal to n+sod(n) for n = 82239396 and 82239405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82239431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403033 + ... + 403236.

It is an arithmetic number, because the mean of its divisors is an integer number (10884645).

Almost surely, 2^82239438 is an apocalyptic number.

82239438 is an abundant number, since it is smaller than the sum of its proper divisors (91914882).

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

82239438 is a wasteful number, since it uses less digits than its factorization.

82239438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806291.

The product of its digits is 82944, while the sum is 39.

The square root of 82239438 is about 9068.5962530041. The cubic root of 82239438 is about 434.8705969961.

The spelling of 82239438 in words is "eighty-two million, two hundred thirty-nine thousand, four hundred thirty-eight".