82590438 has 32 divisors (see below), whose sum is σ = 193883904. Its totient is φ = 22959072.

The previous prime is 82590379. The next prime is 82590451. The reversal of 82590438 is 83409528.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 82590396 and 82590405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25020 + ... + 28127.

It is an arithmetic number, because the mean of its divisors is an integer number (6058872).

Almost surely, 2^82590438 is an apocalyptic number.

82590438 is an abundant number, since it is smaller than the sum of its proper divisors (111293466).

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

82590438 is a wasteful number, since it uses less digits than its factorization.

82590438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53196.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 82590438 is about 9087.9281467230. The cubic root of 82590438 is about 435.4883984637.

It can be divided in two parts, 82590 and 438, that added together give a triangular number (83028 = T₄₀₇).

The spelling of 82590438 in words is "eighty-two million, five hundred ninety thousand, four hundred thirty-eight".