4030428 has 48 divisors (see below), whose sum is σ = 10402560. Its totient is φ = 1208064.

The previous prime is 4030421. The next prime is 4030441. The reversal of 4030428 is 8240304.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4030421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4263 + ... + 5121.

It is an arithmetic number, because the mean of its divisors is an integer number (216720).

Almost surely, 2^4030428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4030428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5201280).

4030428 is an abundant number, since it is smaller than the sum of its proper divisors (6372132).

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

4030428 is a wasteful number, since it uses less digits than its factorization.

4030428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906 (or 904 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4030428 is about 2007.5925881513. The cubic root of 4030428 is about 159.1416008456.

The spelling of 4030428 in words is "four million, thirty thousand, four hundred twenty-eight".