4390256 has 20 divisors (see below), whose sum is σ = 9160872. Its totient is φ = 2026176.

The previous prime is 4390247. The next prime is 4390279. The reversal of 4390256 is 6520934.

It is a congruent number.

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, 10346 + ... + 10761.

Almost surely, 2^4390256 is an apocalyptic number.

It is an amenable number.

4390256 is an abundant number, since it is smaller than the sum of its proper divisors (4770616).

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

4390256 is a wasteful number, since it uses less digits than its factorization.

4390256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21128 (or 21122 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 4390256 is about 2095.2937741520. The cubic root of 4390256 is about 163.7432031054.

The spelling of 4390256 in words is "four million, three hundred ninety thousand, two hundred fifty-six".