2257280 has 32 divisors (see below), whose sum is σ = 5397840. Its totient is φ = 902656.

The previous prime is 2257247. The next prime is 2257291. The reversal of 2257280 is 827522.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1124 + ... + 2403.

2^2257280 is an apocalyptic number.

2257280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2257280 is an abundant number, since it is smaller than the sum of its proper divisors (3140560).

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

2257280 is an equidigital number, since it uses as much as digits as its factorization.

2257280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546 (or 3534 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2257280 is about 1502.4247069321. The cubic root of 2257280 is about 131.1782434675.

The spelling of 2257280 in words is "two million, two hundred fifty-seven thousand, two hundred eighty".