82786974 has 16 divisors (see below), whose sum is σ = 175313808. Its totient is φ = 25972352.

The previous prime is 82786961. The next prime is 82786993. The reversal of 82786974 is 47968728.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405717 + ... + 405920.

It is an arithmetic number, because the mean of its divisors is an integer number (10957113).

Almost surely, 2^82786974 is an apocalyptic number.

82786974 is an abundant number, since it is smaller than the sum of its proper divisors (92526834).

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

82786974 is a wasteful number, since it uses less digits than its factorization.

82786974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811659.

The product of its digits is 1354752, while the sum is 51.

The square root of 82786974 is about 9098.7347472052. The cubic root of 82786974 is about 435.8335608858.

The spelling of 82786974 in words is "eighty-two million, seven hundred eighty-six thousand, nine hundred seventy-four".