6748728 has 96 divisors (see below), whose sum is σ = 20630400. Its totient is φ = 1801728.

The previous prime is 6748691. The next prime is 6748771. The reversal of 6748728 is 8278476.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

Its product of digits (150528) is a multiple of the sum of its prime divisors (168).

It is a self number, because there is not a number n which added to its sum of digits gives 6748728.

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 23 ways as a sum of consecutive naturals, for example, 48483 + ... + 48621.

It is an arithmetic number, because the mean of its divisors is an integer number (214900).

Almost surely, 2^6748728 is an apocalyptic number.

6748728 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6748728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10315200).

6748728 is an abundant number, since it is smaller than the sum of its proper divisors (13881672).

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

6748728 is a wasteful number, since it uses less digits than its factorization.

6748728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 168 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 6748728 is about 2597.8314033055. The cubic root of 6748728 is about 188.9762854823.

The spelling of 6748728 in words is "six million, seven hundred forty-eight thousand, seven hundred twenty-eight".