81832732 has 12 divisors (see below), whose sum is σ = 143533656. Its totient is φ = 40823120.

The previous prime is 81832727. The next prime is 81832757. The reversal of 81832732 is 23723818.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21319 + ... + 24862.

It is an arithmetic number, because the mean of its divisors is an integer number (11961138).

Almost surely, 2^81832732 is an apocalyptic number.

It is an amenable number.

81832732 is a deficient number, since it is larger than the sum of its proper divisors (61700924).

81832732 is a wasteful number, since it uses less digits than its factorization.

81832732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46628 (or 46626 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 81832732 is about 9046.1445931402. The cubic root of 81832732 is about 434.1525439405.

The spelling of 81832732 in words is "eighty-one million, eight hundred thirty-two thousand, seven hundred thirty-two".