2256478 has 32 divisors (see below), whose sum is σ = 4320000. Its totient is φ = 860544.

The previous prime is 2256473. The next prime is 2256479. The reversal of 2256478 is 8746522.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4273 + ... + 4771.

It is an arithmetic number, because the mean of its divisors is an integer number (135000).

2^2256478 is an apocalyptic number.

2256478 is a deficient number, since it is larger than the sum of its proper divisors (2063522).

2256478 is a wasteful number, since it uses less digits than its factorization.

2256478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544.

The product of its digits is 26880, while the sum is 34.

The square root of 2256478 is about 1502.1577813266. The cubic root of 2256478 is about 131.1627059750.

The spelling of 2256478 in words is "two million, two hundred fifty-six thousand, four hundred seventy-eight".