8213915 has 16 divisors (see below), whose sum is σ = 10264320. Its totient is φ = 6303360.

The previous prime is 8213897. The next prime is 8213951. The reversal of 8213915 is 5193128.

It is not a de Polignac number, because 8213915 - 2⁶ = 8213851 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30401 + ... + 30669.

It is an arithmetic number, because the mean of its divisors is an integer number (641520).

Almost surely, 2^8213915 is an apocalyptic number.

8213915 is a deficient number, since it is larger than the sum of its proper divisors (2050405).

8213915 is a wasteful number, since it uses less digits than its factorization.

8213915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502.

The product of its digits is 2160, while the sum is 29.

The square root of 8213915 is about 2865.9928471648. The cubic root of 8213915 is about 201.7669681447.

The spelling of 8213915 in words is "eight million, two hundred thirteen thousand, nine hundred fifteen".