82192357 has 4 divisors (see below), whose sum is σ = 88514860. Its totient is φ = 75869856.

The previous prime is 82192343. The next prime is 82192361. The reversal of 82192357 is 75329128.

It is a Cunningham number, because it is equal to 9066²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12152196 + 70040161 = 3486^2 + 8369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82192357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82192337) 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, 3161232 + ... + 3161257.

It is an arithmetic number, because the mean of its divisors is an integer number (22128715).

Almost surely, 2^82192357 is an apocalyptic number.

It is an amenable number.

82192357 is a deficient number, since it is larger than the sum of its proper divisors (6322503).

82192357 is a wasteful number, since it uses less digits than its factorization.

82192357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6322502.

The product of its digits is 30240, while the sum is 37.

The square root of 82192357 is about 9066.0000551511. Note that the first 4 decimals coincide. The cubic root of 82192357 is about 434.7875952499.

The spelling of 82192357 in words is "eighty-two million, one hundred ninety-two thousand, three hundred fifty-seven".