2499809280 has 416 divisors, whose sum is σ = 8775509760. Its totient is φ = 605552640.

The previous prime is 2499809269. The next prime is 2499809321. The reversal of 2499809280 is 829089942.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40980450 + ... + 40980510.

Almost surely, 2^2499809280 is an apocalyptic number.

2499809280 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 2499809280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4387754880).

2499809280 is an abundant number, since it is smaller than the sum of its proper divisors (6275700480).

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

2499809280 is a wasteful number, since it uses less digits than its factorization.

2499809280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 2499809280 is about 49998.0927636245. The cubic root of 2499809280 is about 1357.1742945046.

The spelling of 2499809280 in words is "two billion, four hundred ninety-nine million, eight hundred nine thousand, two hundred eighty".