81933832 has 16 divisors (see below), whose sum is σ = 154357200. Its totient is φ = 40771920.

The previous prime is 81933821. The next prime is 81933847. The reversal of 81933832 is 23833918.

It is a junction number, because it is equal to n+sod(n) for n = 81933791 and 81933800.

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, 22582 + ... + 25957.

It is an arithmetic number, because the mean of its divisors is an integer number (9647325).

Almost surely, 2^81933832 is an apocalyptic number.

It is an amenable number.

81933832 is a deficient number, since it is larger than the sum of its proper divisors (72423368).

81933832 is a wasteful number, since it uses less digits than its factorization.

81933832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48756 (or 48752 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 81933832 is about 9051.7308842011. The cubic root of 81933832 is about 434.3312611757.

The spelling of 81933832 in words is "eighty-one million, nine hundred thirty-three thousand, eight hundred thirty-two".