82981115 has 8 divisors (see below), whose sum is σ = 113802720. Its totient is φ = 56901312.

The previous prime is 82981069. The next prime is 82981123. The reversal of 82981115 is 51118928.

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

It is a cyclic number.

It is not a de Polignac number, because 82981115 - 2⁶ = 82981051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 2370889 = 82981115 / (8 + 2 + 9 + 8 + 1 + 1 + 1 + 5).

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, 1185410 + ... + 1185479.

It is an arithmetic number, because the mean of its divisors is an integer number (14225340).

Almost surely, 2^82981115 is an apocalyptic number.

82981115 is a deficient number, since it is larger than the sum of its proper divisors (30821605).

82981115 is a wasteful number, since it uses less digits than its factorization.

82981115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370901.

The product of its digits is 5760, while the sum is 35.

The square root of 82981115 is about 9109.3970711568. The cubic root of 82981115 is about 436.1739812205.

The spelling of 82981115 in words is "eighty-two million, nine hundred eighty-one thousand, one hundred fifteen".