2504298640 has 20 divisors (see below), whose sum is σ = 5822494524. Its totient is φ = 1001719424.

The previous prime is 2504298631. The next prime is 2504298647. The reversal of 2504298640 is 468924052.

It can be written as a sum of positive squares in 2 ways, for example, as 1358069904 + 1146228736 = 36852^2 + 33856^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2504298593 and 2504298602.

It is not an unprimeable number, because it can be changed into a prime (2504298647) 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, 15651787 + ... + 15651946.

Almost surely, 2^2504298640 is an apocalyptic number.

2504298640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2504298640 is an abundant number, since it is smaller than the sum of its proper divisors (3318195884).

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

2504298640 is a wasteful number, since it uses less digits than its factorization.

2504298640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31303746 (or 31303740 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 2504298640 is about 50042.9679375634. The cubic root of 2504298640 is about 1357.9862498183.

The spelling of 2504298640 in words is "two billion, five hundred four million, two hundred ninety-eight thousand, six hundred forty".