82768031 has 4 divisors (see below), whose sum is σ = 83541672. Its totient is φ = 81994392.

The previous prime is 82768013. The next prime is 82768043. The reversal of 82768031 is 13086728.

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

It is a cyclic number.

It is not a de Polignac number, because 82768031 - 2¹⁰ = 82767007 is a prime.

It is a super-2 number, since 2×82768031² = 13701093911233922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82767982 and 82768000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82768051) 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, 386660 + ... + 386873.

It is an arithmetic number, because the mean of its divisors is an integer number (20885418).

Almost surely, 2^82768031 is an apocalyptic number.

82768031 is a deficient number, since it is larger than the sum of its proper divisors (773641).

82768031 is a wasteful number, since it uses less digits than its factorization.

82768031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773640.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 82768031 is about 9097.6937187399. The cubic root of 82768031 is about 435.8003164250.

The spelling of 82768031 in words is "eighty-two million, seven hundred sixty-eight thousand, thirty-one".