81796832 has 96 divisors (see below), whose sum is σ = 184923648. Its totient is φ = 35329536.

The previous prime is 81796831. The next prime is 81796853. The reversal of 81796832 is 23869718.

Its product of digits (145152) is a multiple of the sum of its prime divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81796831) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 794093 + ... + 794195.

It is an arithmetic number, because the mean of its divisors is an integer number (1926288).

Almost surely, 2^81796832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81796832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92461824).

81796832 is an abundant number, since it is smaller than the sum of its proper divisors (103126816).

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

81796832 is a wasteful number, since it uses less digits than its factorization.

81796832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 224 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 81796832 is about 9044.1601047306. The cubic root of 81796832 is about 434.0890471151.

It can be divided in two parts, 81796 and 832, that added together give a palindrome (82628).

The spelling of 81796832 in words is "eighty-one million, seven hundred ninety-six thousand, eight hundred thirty-two".