84500728 has 32 divisors (see below), whose sum is σ = 171203760. Its totient is φ = 38868480.

The previous prime is 84500683. The next prime is 84500729. The reversal of 84500728 is 82700548.

It is a junction number, because it is equal to n+sod(n) for n = 84500693 and 84500702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84500729) 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, 33843 + ... + 36253.

Almost surely, 2^84500728 is an apocalyptic number.

It is an amenable number.

84500728 is an abundant number, since it is smaller than the sum of its proper divisors (86703032).

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

84500728 is a wasteful number, since it uses less digits than its factorization.

84500728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767 (or 2763 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 84500728 is about 9192.4277533196. The cubic root of 84500728 is about 438.8204079614.

The spelling of 84500728 in words is "eighty-four million, five hundred thousand, seven hundred twenty-eight".