84045015 has 48 divisors (see below), whose sum is σ = 150115680. Its totient is φ = 43480320.

The previous prime is 84045011. The next prime is 84045077. The reversal of 84045015 is 51054048.

It is not a de Polignac number, because 84045015 - 2² = 84045011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84045015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84045011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 312301 + ... + 312569.

It is an arithmetic number, because the mean of its divisors is an integer number (3127410).

Almost surely, 2^84045015 is an apocalyptic number.

84045015 is a deficient number, since it is larger than the sum of its proper divisors (66070665).

84045015 is a wasteful number, since it uses less digits than its factorization.

84045015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 84045015 is about 9167.6068305747. The cubic root of 84045015 is about 438.0301317858.

The spelling of 84045015 in words is "eighty-four million, forty-five thousand, fifteen".