82774812 has 12 divisors (see below), whose sum is σ = 193141256. Its totient is φ = 27591600.

The previous prime is 82774807. The next prime is 82774831. The reversal of 82774812 is 21847728.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3448939 + ... + 3448962.

Almost surely, 2^82774812 is an apocalyptic number.

It is an amenable number.

82774812 is an abundant number, since it is smaller than the sum of its proper divisors (110366444).

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

82774812 is a wasteful number, since it uses less digits than its factorization.

82774812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6897908 (or 6897906 counting only the distinct ones).

The product of its digits is 50176, while the sum is 39.

The square root of 82774812 is about 9098.0663879750. The cubic root of 82774812 is about 435.8122174823.

The spelling of 82774812 in words is "eighty-two million, seven hundred seventy-four thousand, eight hundred twelve".