4028390 has 24 divisors (see below), whose sum is σ = 7525440. Its totient is φ = 1552544.

The previous prime is 4028389. The next prime is 4028413. The reversal of 4028390 is 938204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8171 + ... + 8649.

It is an arithmetic number, because the mean of its divisors is an integer number (313560).

Almost surely, 2^4028390 is an apocalyptic number.

4028390 is a deficient number, since it is larger than the sum of its proper divisors (3497050).

4028390 is a wasteful number, since it uses less digits than its factorization.

4028390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4028390 is about 2007.0849508678. The cubic root of 4028390 is about 159.1147728210.

The spelling of 4028390 in words is "four million, twenty-eight thousand, three hundred ninety".