82991424 has 56 divisors (see below), whose sum is σ = 220256608. Its totient is φ = 27578880.

The previous prime is 82991413. The next prime is 82991431. The reversal of 82991424 is 42419928.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109254 + ... + 110010.

Almost surely, 2^82991424 is an apocalyptic number.

It is an amenable number.

82991424 is an abundant number, since it is smaller than the sum of its proper divisors (137265184).

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

82991424 is a wasteful number, since it uses less digits than its factorization.

82991424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343 (or 1333 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 82991424 is about 9109.9628978388. The cubic root of 82991424 is about 436.1920428858.

The spelling of 82991424 in words is "eighty-two million, nine hundred ninety-one thousand, four hundred twenty-four".