4145728 has 28 divisors (see below), whose sum is σ = 8292592. Its totient is φ = 2056320.

The previous prime is 4145717. The next prime is 4145731. The reversal of 4145728 is 8275414.

It is a self number, because there is not a number n which added to its sum of digits gives 4145728.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13351 + ... + 13657.

It is an arithmetic number, because the mean of its divisors is an integer number (296164).

Almost surely, 2^4145728 is an apocalyptic number.

It is an amenable number.

4145728 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

4145728 is a wasteful number, since it uses less digits than its factorization.

4145728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 520 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 4145728 is about 2036.1060876094. The cubic root of 4145728 is about 160.6448971804.

The spelling of 4145728 in words is "four million, one hundred forty-five thousand, seven hundred twenty-eight".