2287240 has 32 divisors (see below), whose sum is σ = 5189760. Its totient is φ = 907200.

The previous prime is 2287237. The next prime is 2287247. The reversal of 2287240 is 427822.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2287247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8305 + ... + 8575.

It is an arithmetic number, because the mean of its divisors is an integer number (162180).

2^2287240 is an apocalyptic number.

2287240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2287240 is an abundant number, since it is smaller than the sum of its proper divisors (2902520).

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

2287240 is a wasteful number, since it uses less digits than its factorization.

2287240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 2287240 is about 1512.3623904343. The cubic root of 2287240 is about 131.7560538849.

The spelling of 2287240 in words is "two million, two hundred eighty-seven thousand, two hundred forty".