2490240 has 64 divisors (see below), whose sum is σ = 7943760. Its totient is φ = 663552.

The previous prime is 2490239. The next prime is 2490247. The reversal of 2490240 is 420942.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2490247) 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, 1272 + ... + 2568.

2^2490240 is an apocalyptic number.

2490240 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 2490240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3971880).

2490240 is an abundant number, since it is smaller than the sum of its proper divisors (5453520).

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

2490240 is a wasteful number, since it uses less digits than its factorization.

2490240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2490240 is about 1578.0494288836. The cubic root of 2490240 is about 135.5440323847.

It can be divided in two parts, 24902 and 40, that added together give a palindrome (24942).

The spelling of 2490240 in words is "two million, four hundred ninety thousand, two hundred forty".