2499422720 has 80 divisors (see below), whose sum is σ = 6051576960. Its totient is φ = 989958144.

The previous prime is 2499422663. The next prime is 2499422747. The reversal of 2499422720 is 272249942.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2499422720² = 12494227866504396800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258941 + ... + 268419.

It is an arithmetic number, because the mean of its divisors is an integer number (75644712).

Almost surely, 2^2499422720 is an apocalyptic number.

2499422720 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 2499422720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3025788480).

2499422720 is an abundant number, since it is smaller than the sum of its proper divisors (3552154240).

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

2499422720 is an equidigital number, since it uses as much as digits as its factorization.

2499422720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9605 (or 9589 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 2499422720 is about 49994.2268667093. The cubic root of 2499422720 is about 1357.1043349889.

The spelling of 2499422720 in words is "two billion, four hundred ninety-nine million, four hundred twenty-two thousand, seven hundred twenty".