82785918 has 8 divisors (see below), whose sum is σ = 165571848. Its totient is φ = 27595304.

The previous prime is 82785881. The next prime is 82785959. The reversal of 82785918 is 81958728.

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

82785918 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6898821 + ... + 6898832.

It is an arithmetic number, because the mean of its divisors is an integer number (20696481).

Almost surely, 2^82785918 is an apocalyptic number.

82785918 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82785918 is a wasteful number, since it uses less digits than its factorization.

82785918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13797658.

The product of its digits is 322560, while the sum is 48.

The square root of 82785918 is about 9098.6767169737. The cubic root of 82785918 is about 435.8317077674.

It can be divided in two parts, 8278 and 5918, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 82785918 in words is "eighty-two million, seven hundred eighty-five thousand, nine hundred eighteen".