84128532 has 24 divisors (see below), whose sum is σ = 196461216. Its totient is φ = 28019808.

The previous prime is 84128531. The next prime is 84128537. The reversal of 84128532 is 23582148.

It is a junction number, because it is equal to n+sod(n) for n = 84128493 and 84128502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84128531) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18958 + ... + 22970.

It is an arithmetic number, because the mean of its divisors is an integer number (8185884).

Almost surely, 2^84128532 is an apocalyptic number.

It is an amenable number.

84128532 is an abundant number, since it is smaller than the sum of its proper divisors (112332684).

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

84128532 is a wasteful number, since it uses less digits than its factorization.

84128532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767 (or 5765 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 84128532 is about 9172.1607050902. The cubic root of 84128532 is about 438.1751764840.

The spelling of 84128532 in words is "eighty-four million, one hundred twenty-eight thousand, five hundred thirty-two".