83215415 has 16 divisors (see below), whose sum is σ = 101347200. Its totient is φ = 65587200.

The previous prime is 83215411. The next prime is 83215417. The reversal of 83215415 is 51451238.

It is not a de Polignac number, because 83215415 - 2² = 83215411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83215411) 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, 185111 + ... + 185559.

It is an arithmetic number, because the mean of its divisors is an integer number (6334200).

Almost surely, 2^83215415 is an apocalyptic number.

83215415 is a deficient number, since it is larger than the sum of its proper divisors (18131785).

83215415 is a wasteful number, since it uses less digits than its factorization.

83215415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922.

The product of its digits is 4800, while the sum is 29.

The square root of 83215415 is about 9122.2483522430. The cubic root of 83215415 is about 436.5841128116.

The spelling of 83215415 in words is "eighty-three million, two hundred fifteen thousand, four hundred fifteen".