82817814 has 16 divisors (see below), whose sum is σ = 166692528. Its totient is φ = 27429792.

The previous prime is 82817783. The next prime is 82817821. The reversal of 82817814 is 41871828.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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, 43017 + ... + 44900.

It is an arithmetic number, because the mean of its divisors is an integer number (10418283).

Almost surely, 2^82817814 is an apocalyptic number.

82817814 is an abundant number, since it is smaller than the sum of its proper divisors (83874714).

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

82817814 is a wasteful number, since it uses less digits than its factorization.

82817814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88079.

The product of its digits is 28672, while the sum is 39.

The square root of 82817814 is about 9100.4293305316. The cubic root of 82817814 is about 435.8876734177.

The spelling of 82817814 in words is "eighty-two million, eight hundred seventeen thousand, eight hundred fourteen".