81468732 has 24 divisors (see below), whose sum is σ = 200099200. Its totient is φ = 25726896.

The previous prime is 81468701. The next prime is 81468757. The reversal of 81468732 is 23786418.

It is a congruent number.

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, 178432 + ... + 178887.

Almost surely, 2^81468732 is an apocalyptic number.

It is an amenable number.

81468732 is an abundant number, since it is smaller than the sum of its proper divisors (118630468).

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

81468732 is a wasteful number, since it uses less digits than its factorization.

81468732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357345 (or 357343 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 81468732 is about 9026.0031021488. The cubic root of 81468732 is about 433.5078694681.

The spelling of 81468732 in words is "eighty-one million, four hundred sixty-eight thousand, seven hundred thirty-two".