82147715 has 16 divisors (see below), whose sum is σ = 106390368. Its totient is φ = 60531456.

The previous prime is 82147711. The next prime is 82147729. The reversal of 82147715 is 51774128.

It is a cyclic number.

It is not a de Polignac number, because 82147715 - 2² = 82147711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82147711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37079 + ... + 39231.

It is an arithmetic number, because the mean of its divisors is an integer number (6649398).

Almost surely, 2^82147715 is an apocalyptic number.

82147715 is a deficient number, since it is larger than the sum of its proper divisors (24242653).

82147715 is a wasteful number, since it uses less digits than its factorization.

82147715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758.

The product of its digits is 15680, while the sum is 35.

The square root of 82147715 is about 9063.5376647311. The cubic root of 82147715 is about 434.7088640731.

The spelling of 82147715 in words is "eighty-two million, one hundred forty-seven thousand, seven hundred fifteen".