2399256 has 48 divisors (see below), whose sum is σ = 6645600. Its totient is φ = 781632.

The previous prime is 2399249. The next prime is 2399273. The reversal of 2399256 is 6529932.

2399256 = T₄₀₈ + T₄₀₉ + ... + T₄₃₄.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 2¹³ + 3⁸ + 9³ + 9⁴ + 2²¹ + 5³ + 6⁷ .

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 2399256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3030 + ... + 3738.

It is an arithmetic number, because the mean of its divisors is an integer number (138450).

2^2399256 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 2399256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3322800).

2399256 is an abundant number, since it is smaller than the sum of its proper divisors (4246344).

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

2399256 is a wasteful number, since it uses less digits than its factorization.

2399256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 761 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 2399256 is about 1548.9531949029. The cubic root of 2399256 is about 133.8727536389.

The spelling of 2399256 in words is "two million, three hundred ninety-nine thousand, two hundred fifty-six".