81832704 has 72 divisors (see below), whose sum is σ = 219770880. Its totient is φ = 27030528.

The previous prime is 81832697. The next prime is 81832711. The reversal of 81832704 is 40723818.

It is an interprime number because it is at equal distance from previous prime (81832697) and next prime (81832711).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97117 + ... + 97955.

Almost surely, 2^81832704 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 81832704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109885440).

81832704 is an abundant number, since it is smaller than the sum of its proper divisors (137938176).

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

81832704 is a wasteful number, since it uses less digits than its factorization.

81832704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 971 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 81832704 is about 9046.1430455195. The cubic root of 81832704 is about 434.1524944237.

The spelling of 81832704 in words is "eighty-one million, eight hundred thirty-two thousand, seven hundred four".