81716882 has 16 divisors (see below), whose sum is σ = 133866432. Its totient is φ = 37183440.

The previous prime is 81716851. The next prime is 81716897. The reversal of 81716882 is 28861718.

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, 20288 + ... + 23979.

It is an arithmetic number, because the mean of its divisors is an integer number (8366652).

Almost surely, 2^81716882 is an apocalyptic number.

81716882 is a deficient number, since it is larger than the sum of its proper divisors (52149550).

81716882 is a wasteful number, since it uses less digits than its factorization.

81716882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44353.

The product of its digits is 43008, while the sum is 41.

The square root of 81716882 is about 9039.7390449061. The cubic root of 81716882 is about 433.9475716574.

The spelling of 81716882 in words is "eighty-one million, seven hundred sixteen thousand, eight hundred eighty-two".