2288240 has 20 divisors (see below), whose sum is σ = 5320344. Its totient is φ = 915264.

The previous prime is 2288239. The next prime is 2288243. The reversal of 2288240 is 428822.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2288243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14222 + ... + 14381.

2^2288240 is an apocalyptic number.

2288240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2288240 is an abundant number, since it is smaller than the sum of its proper divisors (3032104).

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

2288240 is a wasteful number, since it uses less digits than its factorization.

2288240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28616 (or 28610 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 2288240 is about 1512.6929628976. The cubic root of 2288240 is about 131.7752526947.

It can be divided in two parts, 22882 and 40, that added together give a palindrome (22922).

The spelling of 2288240 in words is "two million, two hundred eighty-eight thousand, two hundred forty".