4428990 has 24 divisors (see below), whose sum is σ = 11515608. Its totient is φ = 1181040.

The previous prime is 4428971. The next prime is 4429031. The reversal of 4428990 is 998244.

It is a happy number.

4428990 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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, 24516 + ... + 24695.

It is an arithmetic number, because the mean of its divisors is an integer number (479817).

Almost surely, 2^4428990 is an apocalyptic number.

4428990 is an abundant number, since it is smaller than the sum of its proper divisors (7086618).

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

4428990 is a wasteful number, since it uses less digits than its factorization.

4428990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49224 (or 49221 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 4428990 is about 2104.5165715670. The cubic root of 4428990 is about 164.2233472874.

The spelling of 4428990 in words is "four million, four hundred twenty-eight thousand, nine hundred ninety".