4428626 has 8 divisors (see below), whose sum is σ = 6656844. Its totient is φ = 2209680.

The previous prime is 4428607. The next prime is 4428643. The reversal of 4428626 is 6268244.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4389025 + 39601 = 2095^2 + 199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4428626² = 39225456495752, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4428592 and 4428601.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965 + ... + 3128.

Almost surely, 2^4428626 is an apocalyptic number.

4428626 is a deficient number, since it is larger than the sum of its proper divisors (2228218).

4428626 is a wasteful number, since it uses less digits than its factorization.

4428626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4636.

The product of its digits is 18432, while the sum is 32.

The square root of 4428626 is about 2104.4300891215. The cubic root of 4428626 is about 164.2188482228.

The spelling of 4428626 in words is "four million, four hundred twenty-eight thousand, six hundred twenty-six".