84227715 has 64 divisors (see below), whose sum is σ = 175956480. Its totient is φ = 37687680.

The previous prime is 84227711. The next prime is 84227723. The reversal of 84227715 is 51772248.

It is not a de Polignac number, because 84227715 - 2² = 84227711 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 84227715.

It is not an unprimeable number, because it can be changed into a prime (84227711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17124 + ... + 21486.

It is an arithmetic number, because the mean of its divisors is an integer number (2749320).

Almost surely, 2^84227715 is an apocalyptic number.

84227715 is an abundant number, since it is smaller than the sum of its proper divisors (91728765).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84227715 is a wasteful number, since it uses less digits than its factorization.

84227715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401 (or 4395 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 84227715 is about 9177.5658537545. The cubic root of 84227715 is about 438.3473038224.

The spelling of 84227715 in words is "eighty-four million, two hundred twenty-seven thousand, seven hundred fifteen".