2503240720 has 20 divisors (see below), whose sum is σ = 5820034860. Its totient is φ = 1001296256.

The previous prime is 2503240651. The next prime is 2503240723. The reversal of 2503240720 is 270423052.

It can be written as a sum of positive squares in 2 ways, for example, as 1387413504 + 1115827216 = 37248^2 + 33404^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×2503240720² = 12532428204532236800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2503240723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15645175 + ... + 15645334.

It is an arithmetic number, because the mean of its divisors is an integer number (291001743).

Almost surely, 2^2503240720 is an apocalyptic number.

2503240720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2503240720 is an abundant number, since it is smaller than the sum of its proper divisors (3316794140).

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

2503240720 is a wasteful number, since it uses less digits than its factorization.

2503240720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31290522 (or 31290516 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 2503240720 is about 50032.3967045354. The cubic root of 2503240720 is about 1357.7949995767.

Adding to 2503240720 its reverse (270423052), we get a palindrome (2773663772).

The spelling of 2503240720 in words is "two billion, five hundred three million, two hundred forty thousand, seven hundred twenty".