2520240 has 40 divisors (see below), whose sum is σ = 7813488. Its totient is φ = 672000.

The previous prime is 2520211. The next prime is 2520241. The reversal of 2520240 is 420252.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520241) 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, 5011 + ... + 5490.

2^2520240 is an apocalyptic number.

2520240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2520240 is an abundant number, since it is smaller than the sum of its proper divisors (5293248).

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

2520240 is a wasteful number, since it uses less digits than its factorization.

2520240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10517 (or 10511 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 2520240 is about 1587.5263777336. The cubic root of 2520240 is about 136.0861622404.

Adding to 2520240 its reverse (420252), we get a palindrome (2940492).

The spelling of 2520240 in words is "two million, five hundred twenty thousand, two hundred forty".