84981320 has 64 divisors (see below), whose sum is σ = 202487040. Its totient is φ = 32032000.

The previous prime is 84981307. The next prime is 84981331. The reversal of 84981320 is 2318948.

It is a happy number.

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, 64670 + ... + 65970.

It is an arithmetic number, because the mean of its divisors is an integer number (3163860).

Almost surely, 2^84981320 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 84981320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101243520).

84981320 is an abundant number, since it is smaller than the sum of its proper divisors (117505720).

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

84981320 is a wasteful number, since it uses less digits than its factorization.

84981320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 84981320 is about 9218.5313363898. The cubic root of 84981320 is about 439.6507559234.

The spelling of 84981320 in words is "eighty-four million, nine hundred eighty-one thousand, three hundred twenty".