2256904 has 16 divisors (see below), whose sum is σ = 4557420. Its totient is φ = 1041600.

The previous prime is 2256901. The next prime is 2256911. The reversal of 2256904 is 4096522.

It can be written as a sum of positive squares in 2 ways, for example, as 2256004 + 900 = 1502^2 + 30^2 .

It is not an unprimeable number, because it can be changed into a prime (2256901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10747 + ... + 10954.

2^2256904 is an apocalyptic number.

It is an amenable number.

2256904 is an abundant number, since it is smaller than the sum of its proper divisors (2300516).

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

2256904 is a wasteful number, since it uses less digits than its factorization.

2256904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21720 (or 21716 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2256904 is about 1502.2995706583. The cubic root of 2256904 is about 131.1709595154.

It can be divided in two parts, 2256 and 904, that added together give a triangular number (3160 = T₇₉).

The spelling of 2256904 in words is "two million, two hundred fifty-six thousand, nine hundred four".