2281280 has 28 divisors (see below), whose sum is σ = 5433060. Its totient is φ = 912384.

The previous prime is 2281277. The next prime is 2281291. The reversal of 2281280 is 821822.

2281280 = T₅₄₄ + T₅₄₅ + ... + T₅₅₈.

It can be written as a sum of positive squares in 2 ways, for example, as 1132096 + 1149184 = 1064^2 + 1072^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3245 + ... + 3884.

2^2281280 is an apocalyptic number.

2281280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2281280 is an abundant number, since it is smaller than the sum of its proper divisors (3151780).

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

2281280 is an equidigital number, since it uses as much as digits as its factorization.

2281280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7146 (or 7136 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 2281280 is about 1510.3906779373. The cubic root of 2281280 is about 131.6415127579.

The spelling of 2281280 in words is "two million, two hundred eighty-one thousand, two hundred eighty".