2540224 has 28 divisors (see below), whose sum is σ = 5308600. Its totient is φ = 1202688.

The previous prime is 2540203. The next prime is 2540231. The reversal of 2540224 is 4220452.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 172 + ... + 2260.

2^2540224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2540224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2654300).

2540224 is an abundant number, since it is smaller than the sum of its proper divisors (2768376).

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

2540224 is a wasteful number, since it uses less digits than its factorization.

2540224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2540224 is about 1593.8080185518. The cubic root of 2540224 is about 136.4449097194. Note that the first 3 decimals are identical.

Adding to 2540224 its reverse (4220452), we get a palindrome (6760676).

The spelling of 2540224 in words is "two million, five hundred forty thousand, two hundred twenty-four".