81514982 has 8 divisors (see below), whose sum is σ = 122379552. Its totient is φ = 40721800.

The previous prime is 81514981. The next prime is 81514987. The reversal of 81514982 is 28941518.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81514981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14894 + ... + 19617.

It is an arithmetic number, because the mean of its divisors is an integer number (15297444).

Almost surely, 2^81514982 is an apocalyptic number.

81514982 is a deficient number, since it is larger than the sum of its proper divisors (40864570).

81514982 is a wasteful number, since it uses less digits than its factorization.

81514982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35694.

The product of its digits is 23040, while the sum is 38.

The square root of 81514982 is about 9028.5647807390. The cubic root of 81514982 is about 433.5898884447.

The spelling of 81514982 in words is "eighty-one million, five hundred fourteen thousand, nine hundred eighty-two".