4028444 has 12 divisors (see below), whose sum is σ = 8056944. Its totient is φ = 1726464.

The previous prime is 4028441. The next prime is 4028471. The reversal of 4028444 is 4448204.

4028444 is an admirable number.

It is a super-2 number, since 2×4028444² = 32456722122272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71909 + ... + 71964.

It is an arithmetic number, because the mean of its divisors is an integer number (671412).

Almost surely, 2^4028444 is an apocalyptic number.

It is an amenable number.

4028444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4028444 is a wasteful number, since it uses less digits than its factorization.

4028444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143884 (or 143882 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 4028444 is about 2007.0984031681. The cubic root of 4028444 is about 159.1154837882.

The spelling of 4028444 in words is "four million, twenty-eight thousand, four hundred forty-four".