81832692 has 48 divisors (see below), whose sum is σ = 194384960. Its totient is φ = 26790912.

The previous prime is 81832691. The next prime is 81832697. The reversal of 81832692 is 29623818.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 81832692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81832691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266403 + ... + 266709.

Almost surely, 2^81832692 is an apocalyptic number.

It is an amenable number.

81832692 is an abundant number, since it is smaller than the sum of its proper divisors (112552268).

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

81832692 is a wasteful number, since it uses less digits than its factorization.

81832692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 638 counting only the distinct ones).

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

The square root of 81832692 is about 9046.1423822533. The cubic root of 81832692 is about 434.1524732023.

The spelling of 81832692 in words is "eighty-one million, eight hundred thirty-two thousand, six hundred ninety-two".