82802775 has 48 divisors (see below), whose sum is σ = 150490368. Its totient is φ = 39840000.

The previous prime is 82802771. The next prime is 82802777. The reversal of 82802775 is 57720828.

It is not a de Polignac number, because 82802775 - 2² = 82802771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82802771) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 137475 + ... + 138075.

It is an arithmetic number, because the mean of its divisors is an integer number (3135216).

Almost surely, 2^82802775 is an apocalyptic number.

82802775 is a deficient number, since it is larger than the sum of its proper divisors (67687593).

82802775 is a wasteful number, since it uses less digits than its factorization.

82802775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 82802775 is about 9099.6030133188. The cubic root of 82802775 is about 435.8612873411.

The spelling of 82802775 in words is "eighty-two million, eight hundred two thousand, seven hundred seventy-five".