84128572 has 48 divisors (see below), whose sum is σ = 170553600. Its totient is φ = 35932160.

The previous prime is 84128557. The next prime is 84128647. The reversal of 84128572 is 27582148.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 59004 + ... + 60412.

It is an arithmetic number, because the mean of its divisors is an integer number (3553200).

Almost surely, 2^84128572 is an apocalyptic number.

It is an amenable number.

84128572 is an abundant number, since it is smaller than the sum of its proper divisors (86425028).

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

84128572 is a wasteful number, since it uses less digits than its factorization.

84128572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506 (or 1504 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 84128572 is about 9172.1628856012. The cubic root of 84128572 is about 438.1752459293.

The spelling of 84128572 in words is "eighty-four million, one hundred twenty-eight thousand, five hundred seventy-two".