4028813 has 8 divisors (see below), whose sum is σ = 4286520. Its totient is φ = 3773440.

The previous prime is 4028807. The next prime is 4028833. The reversal of 4028813 is 3188204.

It can be written as a sum of positive squares in 4 ways, for example, as 40804 + 3988009 = 202^2 + 1997^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4028813 - 2¹⁰ = 4027789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028833) 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, 4133 + ... + 5013.

It is an arithmetic number, because the mean of its divisors is an integer number (535815).

Almost surely, 2^4028813 is an apocalyptic number.

It is an amenable number.

4028813 is a deficient number, since it is larger than the sum of its proper divisors (257707).

4028813 is a wasteful number, since it uses less digits than its factorization.

4028813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 4028813 is about 2007.1903248073. The cubic root of 4028813 is about 159.1203418939.

The spelling of 4028813 in words is "four million, twenty-eight thousand, eight hundred thirteen".