4158728 has 36 divisors (see below), whose sum is σ = 9159615. Its totient is φ = 1765008.

The previous prime is 4158697. The next prime is 4158731. The reversal of 4158728 is 8278514.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 2079364 + 2079364 = 1442^2 + 1442^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1442.

It is a Duffinian number.

Its product of digits (17920) is a multiple of the sum of its prime divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 40325 + ... + 40427.

Almost surely, 2^4158728 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 4158728

4158728 is an abundant number, since it is smaller than the sum of its proper divisors (5000887).

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

4158728 is a wasteful number, since it uses less digits than its factorization.

4158728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 112 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 4158728 is about 2039.2959569420. The cubic root of 4158728 is about 160.8126364829.

It can be divided in two parts, 415872 and 8, that multiplied together give a square (3326976 = 1824²).

The spelling of 4158728 in words is "four million, one hundred fifty-eight thousand, seven hundred twenty-eight".