6118728 has 144 divisors (see below), whose sum is σ = 20013840. Its totient is φ = 1552320.

The previous prime is 6118711. The next prime is 6118729. The reversal of 6118728 is 8278116.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

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

It is not an unprimeable number, because it can be changed into a prime (6118729) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 142275 + ... + 142317.

It is an arithmetic number, because the mean of its divisors is an integer number (138985).

Almost surely, 2^6118728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6118728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10006920).

6118728 is an abundant number, since it is smaller than the sum of its proper divisors (13895112).

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

6118728 is a wasteful number, since it uses less digits than its factorization.

6118728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 66 counting only the distinct ones).

The product of its digits is 5376, while the sum is 33.

The square root of 6118728 is about 2473.6062742482. The cubic root of 6118728 is about 182.9028120212.

It can be divided in two parts, 611 and 8728, that added together give a palindrome (9339).

The spelling of 6118728 in words is "six million, one hundred eighteen thousand, seven hundred twenty-eight".