84578416 has 60 divisors (see below), whose sum is σ = 183351360. Its totient is φ = 37739520.

The previous prime is 84578401. The next prime is 84578423. The reversal of 84578416 is 61487548.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83320 + ... + 84328.

It is an arithmetic number, because the mean of its divisors is an integer number (3055856).

Almost surely, 2^84578416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84578416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91675680).

84578416 is an abundant number, since it is smaller than the sum of its proper divisors (98772944).

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

84578416 is a wasteful number, since it uses less digits than its factorization.

84578416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 1055 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 84578416 is about 9196.6524344459. The cubic root of 84578416 is about 438.9548471885.

The spelling of 84578416 in words is "eighty-four million, five hundred seventy-eight thousand, four hundred sixteen".