82118355 has 32 divisors (see below), whose sum is σ = 147218688. Its totient is φ = 38736000.

The previous prime is 82118329. The next prime is 82118363. The reversal of 82118355 is 55381128.

It is a happy number.

It is not a de Polignac number, because 82118355 - 2¹³ = 82110163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621 + ... + 12830.

It is an arithmetic number, because the mean of its divisors is an integer number (4600584).

Almost surely, 2^82118355 is an apocalyptic number.

82118355 is a deficient number, since it is larger than the sum of its proper divisors (65100333).

82118355 is a wasteful number, since it uses less digits than its factorization.

82118355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13507.

The product of its digits is 9600, while the sum is 33.

The square root of 82118355 is about 9061.9178433707. The cubic root of 82118355 is about 434.6570688687.

The spelling of 82118355 in words is "eighty-two million, one hundred eighteen thousand, three hundred fifty-five".