4028426 has 4 divisors (see below), whose sum is σ = 6042642. Its totient is φ = 2014212.

The previous prime is 4028413. The next prime is 4028429. The reversal of 4028426 is 6248204.

4028426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3667225 + 361201 = 1915^2 + 601^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4028395 and 4028404.

It is not an unprimeable number, because it can be changed into a prime (4028429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007105 + ... + 1007108.

Almost surely, 2^4028426 is an apocalyptic number.

4028426 is a deficient number, since it is larger than the sum of its proper divisors (2014216).

4028426 is a wasteful number, since it uses less digits than its factorization.

4028426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014215.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 4028426 is about 2007.0939190780. The cubic root of 4028426 is about 159.1152467998.

The spelling of 4028426 in words is "four million, twenty-eight thousand, four hundred twenty-six".