82747816 has 16 divisors (see below), whose sum is σ = 155250900. Its totient is φ = 41347584.

The previous prime is 82747801. The next prime is 82747877. The reversal of 82747816 is 61874728.

It can be written as a sum of positive squares in 2 ways, for example, as 82628100 + 119716 = 9090^2 + 346^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18750 + ... + 22738.

Almost surely, 2^82747816 is an apocalyptic number.

It is an amenable number.

82747816 is a deficient number, since it is larger than the sum of its proper divisors (72503084).

82747816 is a wasteful number, since it uses less digits than its factorization.

82747816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6588 (or 6584 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 82747816 is about 9096.5826550414. The cubic root of 82747816 is about 435.7648340429.

The spelling of 82747816 in words is "eighty-two million, seven hundred forty-seven thousand, eight hundred sixteen".