2239240 has 64 divisors (see below), whose sum is σ = 5540400. Its totient is φ = 811008.

The previous prime is 2239231. The next prime is 2239247. The reversal of 2239240 is 429322.

It can be written as a sum of positive squares in 8 ways, for example, as 1425636 + 813604 = 1194^2 + 902^2 .

It is not an unprimeable number, because it can be changed into a prime (2239247) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25116 + ... + 25204.

2^2239240 is an apocalyptic number.

2239240 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 2239240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2770200).

2239240 is an abundant number, since it is smaller than the sum of its proper divisors (3301160).

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

2239240 is a wasteful number, since it uses less digits than its factorization.

2239240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2239240 is about 1496.4090349901. The cubic root of 2239240 is about 130.8278530528.

The spelling of 2239240 in words is "two million, two hundred thirty-nine thousand, two hundred forty".