82442817 has 6 divisors (see below), whose sum is σ = 119084082. Its totient is φ = 54961872.

The previous prime is 82442783. The next prime is 82442831. The reversal of 82442817 is 71824428.

It can be written as a sum of positive squares in only one way, i.e., 80299521 + 2143296 = 8961^2 + 1464^2 .

It is not a de Polignac number, because 82442817 - 2⁸ = 82442561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82442837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4580148 + ... + 4580165.

It is an arithmetic number, because the mean of its divisors is an integer number (19847347).

Almost surely, 2^82442817 is an apocalyptic number.

It is an amenable number.

82442817 is a deficient number, since it is larger than the sum of its proper divisors (36641265).

82442817 is a wasteful number, since it uses less digits than its factorization.

82442817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9160319 (or 9160316 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 82442817 is about 9079.8026960942. The cubic root of 82442817 is about 435.2287817552.

The spelling of 82442817 in words is "eighty-two million, four hundred forty-two thousand, eight hundred seventeen".