82819357 has 4 divisors (see below), whose sum is σ = 85057756. Its totient is φ = 80580960.

The previous prime is 82819339. The next prime is 82819403. The reversal of 82819357 is 75391828.

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 75012921 + 7806436 = 8661^2 + 2794^2 .

It is a cyclic number.

It is not a de Polignac number, because 82819357 - 2¹⁵ = 82786589 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 (82919357) 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 3 ways as a sum of consecutive naturals, for example, 1119144 + ... + 1119217.

It is an arithmetic number, because the mean of its divisors is an integer number (21264439).

Almost surely, 2^82819357 is an apocalyptic number.

It is an amenable number.

82819357 is a deficient number, since it is larger than the sum of its proper divisors (2238399).

82819357 is a wasteful number, since it uses less digits than its factorization.

82819357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238398.

The product of its digits is 120960, while the sum is 43.

The square root of 82819357 is about 9100.5141063568. The cubic root of 82819357 is about 435.8903804460.

The spelling of 82819357 in words is "eighty-two million, eight hundred nineteen thousand, three hundred fifty-seven".