82787768 has 16 divisors (see below), whose sum is σ = 177402480. Its totient is φ = 35480448.

The previous prime is 82787753. The next prime is 82787777. The reversal of 82787768 is 86778728.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 739121 + ... + 739232.

It is an arithmetic number, because the mean of its divisors is an integer number (11087655).

Almost surely, 2^82787768 is an apocalyptic number.

It is an amenable number.

82787768 is an abundant number, since it is smaller than the sum of its proper divisors (94614712).

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

82787768 is a wasteful number, since it uses less digits than its factorization.

82787768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478366 (or 1478362 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 53.

The square root of 82787768 is about 9098.7783795408. The cubic root of 82787768 is about 435.8349542239.

The spelling of 82787768 in words is "eighty-two million, seven hundred eighty-seven thousand, seven hundred sixty-eight".