2273856 has 56 divisors (see below), whose sum is σ = 6486144. Its totient is φ = 698880.

The previous prime is 2273851. The next prime is 2273867. The reversal of 2273856 is 6583722.

It is a super-2 number, since 2×2273856² = 10340842217472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2273851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2041 + ... + 2951.

It is an arithmetic number, because the mean of its divisors is an integer number (115824).

2^2273856 is an apocalyptic number.

2273856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2273856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3243072).

2273856 is an abundant number, since it is smaller than the sum of its proper divisors (4212288).

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

2273856 is a wasteful number, since it uses less digits than its factorization.

2273856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 929 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 2273856 is about 1507.9310329057. The cubic root of 2273856 is about 131.4985566594.

The spelling of 2273856 in words is "two million, two hundred seventy-three thousand, eight hundred fifty-six".