82415893 has 6 divisors (see below), whose sum is σ = 95871606. Its totient is φ = 70642152.

The previous prime is 82415857. The next prime is 82415903. The reversal of 82415893 is 39851428.

It can be written as a sum of positive squares in only one way, i.e., 74615044 + 7800849 = 8638^2 + 2793^2 .

It is a de Polignac number, because none of the positive numbers 2^k-82415893 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 (82415803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 840930 + ... + 841027.

It is an arithmetic number, because the mean of its divisors is an integer number (15978601).

Almost surely, 2^82415893 is an apocalyptic number.

It is an amenable number.

82415893 is a deficient number, since it is larger than the sum of its proper divisors (13455713).

82415893 is a wasteful number, since it uses less digits than its factorization.

82415893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681971 (or 1681964 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 82415893 is about 9078.3199436900. The cubic root of 82415893 is about 435.1813978998.

The spelling of 82415893 in words is "eighty-two million, four hundred fifteen thousand, eight hundred ninety-three".