6172728 has 32 divisors (see below), whose sum is σ = 15500160. Its totient is φ = 2048480.

The previous prime is 6172721. The next prime is 6172741. The reversal of 6172728 is 8272716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6172721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7051 + ... + 7877.

It is an arithmetic number, because the mean of its divisors is an integer number (484380).

Almost surely, 2^6172728 is an apocalyptic number.

It is an amenable number.

6172728 is an abundant number, since it is smaller than the sum of its proper divisors (9327432).

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

6172728 is a wasteful number, since it uses less digits than its factorization.

6172728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147 (or 1143 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 6172728 is about 2484.4975347140. The cubic root of 6172728 is about 183.4392981539.

The spelling of 6172728 in words is "six million, one hundred seventy-two thousand, seven hundred twenty-eight".