82115629 has 4 divisors (see below), whose sum is σ = 82311100. Its totient is φ = 81920160.

The previous prime is 82115623. The next prime is 82115653. The reversal of 82115629 is 92651128.

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 2941225 + 79174404 = 1715^2 + 8898^2 .

It is a cyclic number.

It is not a de Polignac number, because 82115629 - 2⁵ = 82115597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82115594 and 82115603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82115623) 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, 97104 + ... + 97945.

It is an arithmetic number, because the mean of its divisors is an integer number (20577775).

Almost surely, 2^82115629 is an apocalyptic number.

It is an amenable number.

82115629 is a deficient number, since it is larger than the sum of its proper divisors (195471).

82115629 is a wasteful number, since it uses less digits than its factorization.

82115629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195470.

The product of its digits is 8640, while the sum is 34.

The square root of 82115629 is about 9061.7674324604. The cubic root of 82115629 is about 434.6522591917.

The spelling of 82115629 in words is "eighty-two million, one hundred fifteen thousand, six hundred twenty-nine".