81832112 has 10 divisors (see below), whose sum is σ = 158549748. Its totient is φ = 40916048.

The previous prime is 81832103. The next prime is 81832117. The reversal of 81832112 is 21123818.

It is not an unprimeable number, because it can be changed into a prime (81832117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2557238 + ... + 2557269.

Almost surely, 2^81832112 is an apocalyptic number.

It is an amenable number.

81832112 is a deficient number, since it is larger than the sum of its proper divisors (76717636).

81832112 is a wasteful number, since it uses less digits than its factorization.

81832112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114515 (or 5114509 counting only the distinct ones).

The product of its digits is 768, while the sum is 26.

The square root of 81832112 is about 9046.1103243328. The cubic root of 81832112 is about 434.1514474955.

The spelling of 81832112 in words is "eighty-one million, eight hundred thirty-two thousand, one hundred twelve".