1812256 has 12 divisors (see below), whose sum is σ = 3567942. Its totient is φ = 906112.

The previous prime is 1812233. The next prime is 1812263. The reversal of 1812256 is 6522181.

It can be written as a sum of positive squares in only one way, i.e., 1299600 + 512656 = 1140^2 + 716^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1812256.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28285 + ... + 28348.

2^1812256 is an apocalyptic number.

1812256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1812256 is a deficient number, since it is larger than the sum of its proper divisors (1755686).

1812256 is an equidigital number, since it uses as much as digits as its factorization.

1812256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56643 (or 56635 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 1812256 is about 1346.2005794086. The cubic root of 1812256 is about 121.9195025733.

The spelling of 1812256 in words is "one million, eight hundred twelve thousand, two hundred fifty-six".