4028290 has 24 divisors (see below), whose sum is σ = 8435772. Its totient is φ = 1380960.

The previous prime is 4028287. The next prime is 4028293. The reversal of 4028290 is 928204.

It is an interprime number because it is at equal distance from previous prime (4028287) and next prime (4028293).

It can be written as a sum of positive squares in 2 ways, for example, as 3869089 + 159201 = 1967^2 + 399^2 .

It is not an unprimeable number, because it can be changed into a prime (4028293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3621 + ... + 4600.

Almost surely, 2^4028290 is an apocalyptic number.

4028290 is an abundant number, since it is smaller than the sum of its proper divisors (4407482).

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

4028290 is a wasteful number, since it uses less digits than its factorization.

4028290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8242 (or 8235 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 4028290 is about 2007.0600389625. The cubic root of 4028290 is about 159.1134561983.

The spelling of 4028290 in words is "four million, twenty-eight thousand, two hundred ninety".