82144815 has 32 divisors (see below), whose sum is σ = 135129600. Its totient is φ = 42595200.

The previous prime is 82144813. The next prime is 82144817. The reversal of 82144815 is 51844128.

It is an interprime number because it is at equal distance from previous prime (82144813) and next prime (82144817).

It is not a de Polignac number, because 82144815 - 2¹ = 82144813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82144813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88926 + ... + 89844.

It is an arithmetic number, because the mean of its divisors is an integer number (4222800).

Almost surely, 2^82144815 is an apocalyptic number.

82144815 is a deficient number, since it is larger than the sum of its proper divisors (52984785).

82144815 is a wasteful number, since it uses less digits than its factorization.

82144815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087.

The product of its digits is 10240, while the sum is 33.

The square root of 82144815 is about 9063.3776816372. The cubic root of 82144815 is about 434.7037486111.

The spelling of 82144815 in words is "eighty-two million, one hundred forty-four thousand, eight hundred fifteen".