2256239 has 8 divisors (see below), whose sum is σ = 2313360. Its totient is φ = 2200000.

The previous prime is 2256227. The next prime is 2256251. The reversal of 2256239 is 9326522.

It is an interprime number because it is at equal distance from previous prime (2256227) and next prime (2256251).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2256239 is a prime.

It is a super-2 number, since 2×2256239² = 10181228850242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁷ + 5³ + 6 + 2²¹ + 3⁹ + 9 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8864 + ... + 9114.

It is an arithmetic number, because the mean of its divisors is an integer number (289170).

2^2256239 is an apocalyptic number.

2256239 is a deficient number, since it is larger than the sum of its proper divisors (57121).

2256239 is a wasteful number, since it uses less digits than its factorization.

2256239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441.

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

The square root of 2256239 is about 1502.0782269909. The cubic root of 2256239 is about 131.1580750127.

The spelling of 2256239 in words is "two million, two hundred fifty-six thousand, two hundred thirty-nine".