2258240 has 28 divisors (see below), whose sum is σ = 5378196. Its totient is φ = 903168.

The previous prime is 2258233. The next prime is 2258251. The reversal of 2258240 is 428522.

It can be written as a sum of positive squares in 2 ways, for example, as 1784896 + 473344 = 1336^2 + 688^2 .

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, 3209 + ... + 3848.

2^2258240 is an apocalyptic number.

2258240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2258240 is an abundant number, since it is smaller than the sum of its proper divisors (3119956).

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

2258240 is an equidigital number, since it uses as much as digits as its factorization.

2258240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074 (or 7064 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2258240 is about 1502.7441565350. The cubic root of 2258240 is about 131.1968371238.

It can be divided in two parts, 22582 and 40, that added together give a palindrome (22622).

The spelling of 2258240 in words is "two million, two hundred fifty-eight thousand, two hundred forty".