82117756 has 12 divisors (see below), whose sum is σ = 164235568. Its totient is φ = 35193312.

The previous prime is 82117733. The next prime is 82117759. The reversal of 82117756 is 65771128.

82117756 is nontrivially palindromic in base 8.

82117756 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82117759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1466361 + ... + 1466416.

Almost surely, 2^82117756 is an apocalyptic number.

It is an amenable number.

82117756 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.

82117756 is a wasteful number, since it uses less digits than its factorization.

82117756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932788 (or 2932786 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 82117756 is about 9061.8847929115. The cubic root of 82117756 is about 434.6560120192.

The spelling of 82117756 in words is "eighty-two million, one hundred seventeen thousand, seven hundred fifty-six".