728700081174 has 96 divisors (see below), whose sum is σ = 1763530030080. Its totient is φ = 215917841664.

The previous prime is 728700081173. The next prime is 728700081191. The reversal of 728700081174 is 471180007827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728700081173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2458852 + ... + 2739224.

It is an arithmetic number, because the mean of its divisors is an integer number (18370104480).

Almost surely, 2^728700081174 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728700081174, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881765015040).

728700081174 is an abundant number, since it is smaller than the sum of its proper divisors (1034829948906).

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

728700081174 is a wasteful number, since it uses less digits than its factorization.

728700081174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280806 (or 280803 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 45.

The spelling of 728700081174 in words is "seven hundred twenty-eight billion, seven hundred million, eighty-one thousand, one hundred seventy-four".