2273280 has 104 divisors (see below), whose sum is σ = 7470192. Its totient is φ = 589824.

The previous prime is 2273279. The next prime is 2273303. The reversal of 2273280 is 823722.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2273280.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61422 + ... + 61458.

2^2273280 is an apocalyptic number.

2273280 is a gapful number since it is divisible by the number (20) 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 2273280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3735096).

2273280 is an abundant number, since it is smaller than the sum of its proper divisors (5196912).

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

2273280 is an equidigital number, since it uses as much as digits as its factorization.

2273280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 2273280 is about 1507.7400306419. The cubic root of 2273280 is about 131.4874522380.

The spelling of 2273280 in words is "two million, two hundred seventy-three thousand, two hundred eighty".