84310720 has 84 divisors (see below), whose sum is σ = 217535760. Its totient is φ = 31110144.

The previous prime is 84310703. The next prime is 84310763. The reversal of 84310720 is 2701348.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 53301 + ... + 54859.

Almost surely, 2^84310720 is an apocalyptic number.

84310720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84310720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108767880).

84310720 is an abundant number, since it is smaller than the sum of its proper divisors (133225040).

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

84310720 is a wasteful number, since it uses less digits than its factorization.

84310720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 84310720 is about 9182.0869087588. The cubic root of 84310720 is about 438.4912511847.

The spelling of 84310720 in words is "eighty-four million, three hundred ten thousand, seven hundred twenty".