2256746 has 4 divisors (see below), whose sum is σ = 3385122. Its totient is φ = 1128372.

The previous prime is 2256743. The next prime is 2256781. The reversal of 2256746 is 6476522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1177225 + 1079521 = 1085^2 + 1039^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁷ + 5⁹ + 6² + 7⁶ + 4² + 6⁶ .

It is not an unprimeable number, because it can be changed into a prime (2256743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564185 + ... + 564188.

2^2256746 is an apocalyptic number.

2256746 is a deficient number, since it is larger than the sum of its proper divisors (1128376).

2256746 is a wasteful number, since it uses less digits than its factorization.

2256746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128375.

The product of its digits is 20160, while the sum is 32.

The square root of 2256746 is about 1502.2469836881. The cubic root of 2256746 is about 131.1678984643.

The spelling of 2256746 in words is "two million, two hundred fifty-six thousand, seven hundred forty-six".