2387240 has 32 divisors (see below), whose sum is σ = 5519880. Its totient is φ = 928512.

The previous prime is 2387237. The next prime is 2387243. The reversal of 2387240 is 427832.

2387240 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2387237) and next prime (2387243).

It can be written as a sum of positive squares in 4 ways, for example, as 2316484 + 70756 = 1522^2 + 266^2 .

It is not an unprimeable number, because it can be changed into a prime (2387243) 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, 674 + ... + 2286.

2^2387240 is an apocalyptic number.

2387240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2387240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2759940).

2387240 is an abundant number, since it is smaller than the sum of its proper divisors (3132640).

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

2387240 is a wasteful number, since it uses less digits than its factorization.

2387240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 2387240 is about 1545.0695777213. The cubic root of 2387240 is about 133.6488914727.

The spelling of 2387240 in words is "two million, three hundred eighty-seven thousand, two hundred forty".