2381256 has 24 divisors (see below), whose sum is σ = 6449430. Its totient is φ = 793728.

The previous prime is 2381243. The next prime is 2381263. The reversal of 2381256 is 6521832.

It can be written as a sum of positive squares in only one way, i.e., 2056356 + 324900 = 1434^2 + 570^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16465 + ... + 16608.

2^2381256 is an apocalyptic number.

It is an amenable number.

2381256 is an abundant number, since it is smaller than the sum of its proper divisors (4068174).

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

2381256 is a wasteful number, since it uses less digits than its factorization.

2381256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33085 (or 33078 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2381256 is about 1543.1318803006. The cubic root of 2381256 is about 133.5371272405.

The spelling of 2381256 in words is "two million, three hundred eighty-one thousand, two hundred fifty-six".