4545728 has 42 divisors (see below), whose sum is σ = 9931908. Its totient is φ = 2062720.

The previous prime is 4545727. The next prime is 4545733. The reversal of 4545728 is 8275454.

It is not an unprimeable number, because it can be changed into a prime (4545727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7451 + ... + 8037.

It is an arithmetic number, because the mean of its divisors is an integer number (236474).

Almost surely, 2^4545728 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 4545728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4965954).

4545728 is an abundant number, since it is smaller than the sum of its proper divisors (5386180).

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

4545728 is a wasteful number, since it uses less digits than its factorization.

4545728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 600 counting only the distinct ones).

The product of its digits is 44800, while the sum is 35.

The square root of 4545728 is about 2132.0712933671. The cubic root of 4545728 is about 165.6537030117.

The spelling of 4545728 in words is "four million, five hundred forty-five thousand, seven hundred twenty-eight".