2513640 has 32 divisors (see below), whose sum is σ = 7541280. Its totient is φ = 670272.

The previous prime is 2513617. The next prime is 2513653. The reversal of 2513640 is 463152.

It is a happy number.

2513640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10354 + ... + 10593.

It is an arithmetic number, because the mean of its divisors is an integer number (235665).

2^2513640 is an apocalyptic number.

2513640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2513640 is an abundant number, since it is smaller than the sum of its proper divisors (5027640).

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

2513640 is a wasteful number, since it uses less digits than its factorization.

2513640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20961 (or 20957 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2513640 is about 1585.4463094031. The cubic root of 2513640 is about 135.9672643240.

Adding to 2513640 its reverse (463152), we get a palindrome (2976792).

The spelling of 2513640 in words is "two million, five hundred thirteen thousand, six hundred forty".