8122815 has 16 divisors (see below), whose sum is σ = 14440800. Its totient is φ = 4332096.

The previous prime is 8122799. The next prime is 8122819. The reversal of 8122815 is 5182218.

It is not a de Polignac number, because 8122815 - 2⁴ = 8122799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8122819) 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, 29950 + ... + 30219.

It is an arithmetic number, because the mean of its divisors is an integer number (902550).

Almost surely, 2^8122815 is an apocalyptic number.

8122815 is a deficient number, since it is larger than the sum of its proper divisors (6317985).

8122815 is a wasteful number, since it uses less digits than its factorization.

8122815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60183 (or 60177 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 8122815 is about 2850.0552626221. The cubic root of 8122815 is about 201.0182652147.

The spelling of 8122815 in words is "eight million, one hundred twenty-two thousand, eight hundred fifteen".