2503516440 has 32 divisors (see below), whose sum is σ = 7510549680. Its totient is φ = 667604352.

The previous prime is 2503516387. The next prime is 2503516447. The reversal of 2503516440 is 446153052.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2503516398 and 2503516407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2503516447) 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, 10431199 + ... + 10431438.

Almost surely, 2^2503516440 is an apocalyptic number.

2503516440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2503516440 is an abundant number, since it is smaller than the sum of its proper divisors (5007033240).

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

2503516440 is a wasteful number, since it uses less digits than its factorization.

2503516440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20862651 (or 20862647 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 2503516440 is about 50035.1520433385. The cubic root of 2503516440 is about 1357.8448492895.

Adding to 2503516440 its reverse (446153052), we get a palindrome (2949669492).

The spelling of 2503516440 in words is "two billion, five hundred three million, five hundred sixteen thousand, four hundred forty".