84574720 has 40 divisors (see below), whose sum is σ = 202787244. Its totient is φ = 33828864.

The previous prime is 84574709. The next prime is 84574729. The reversal of 84574720 is 2747548.

It can be written as a sum of positive squares in 2 ways, for example, as 68956416 + 15618304 = 8304^2 + 3952^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 84574720.

It is not an unprimeable number, because it can be changed into a prime (84574729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13959 + ... + 19078.

Almost surely, 2^84574720 is an apocalyptic number.

84574720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84574720 is an abundant number, since it is smaller than the sum of its proper divisors (118212524).

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

84574720 is an equidigital number, since it uses as much as digits as its factorization.

84574720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33060 (or 33044 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 84574720 is about 9196.4514895692. The cubic root of 84574720 is about 438.9484531192.

The spelling of 84574720 in words is "eighty-four million, five hundred seventy-four thousand, seven hundred twenty".