81102932 has 24 divisors (see below), whose sum is σ = 145557216. Its totient is φ = 39525408.

The previous prime is 81102911. The next prime is 81102943. The reversal of 81102932 is 23920118.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33383 + ... + 35729.

It is an arithmetic number, because the mean of its divisors is an integer number (6064884).

Almost surely, 2^81102932 is an apocalyptic number.

It is an amenable number.

81102932 is a deficient number, since it is larger than the sum of its proper divisors (64454284).

81102932 is a wasteful number, since it uses less digits than its factorization.

81102932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567 (or 2565 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 81102932 is about 9005.7166288974. The cubic root of 81102932 is about 432.8580696032.

The spelling of 81102932 in words is "eighty-one million, one hundred two thousand, nine hundred thirty-two".