82431958 has 32 divisors (see below), whose sum is σ = 144422208. Its totient is φ = 34560000.

The previous prime is 82431919. The next prime is 82431991. The reversal of 82431958 is 85913428.

It is a self number, because there is not a number n which added to its sum of digits gives 82431958.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136858 + ... + 137458.

It is an arithmetic number, because the mean of its divisors is an integer number (4513194).

Almost surely, 2^82431958 is an apocalyptic number.

82431958 is a deficient number, since it is larger than the sum of its proper divisors (61990250).

82431958 is a wasteful number, since it uses less digits than its factorization.

82431958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808.

The product of its digits is 69120, while the sum is 40.

The square root of 82431958 is about 9079.2047008535. The cubic root of 82431958 is about 435.2096721185.

It can be divided in two parts, 8243 and 1958, that added together give a palindrome (10201).

The spelling of 82431958 in words is "eighty-two million, four hundred thirty-one thousand, nine hundred fifty-eight".