84538728 has 48 divisors (see below), whose sum is σ = 237444480. Its totient is φ = 28178928.

The previous prime is 84538723. The next prime is 84538757. The reversal of 84538728 is 82783548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84538723) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 19800 + ... + 23687.

It is an arithmetic number, because the mean of its divisors is an integer number (4946760).

Almost surely, 2^84538728 is an apocalyptic number.

It is an amenable number.

84538728 is an abundant number, since it is smaller than the sum of its proper divisors (152905752).

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

84538728 is a wasteful number, since it uses less digits than its factorization.

84538728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43508 (or 43492 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 84538728 is about 9194.4944396090. The cubic root of 84538728 is about 438.8861773219.

The spelling of 84538728 in words is "eighty-four million, five hundred thirty-eight thousand, seven hundred twenty-eight".