2399280 has 80 divisors (see below), whose sum is σ = 8020320. Its totient is φ = 589824.

The previous prime is 2399273. The next prime is 2399297. The reversal of 2399280 is 829932.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2736 + ... + 3504.

It is an arithmetic number, because the mean of its divisors is an integer number (100254).

2^2399280 is an apocalyptic number.

2399280 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 2399280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4010160).

2399280 is an abundant number, since it is smaller than the sum of its proper divisors (5621040).

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

2399280 is a wasteful number, since it uses less digits than its factorization.

2399280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 2399280 is about 1548.9609420512. The cubic root of 2399280 is about 133.8732000183.

The spelling of 2399280 in words is "two million, three hundred ninety-nine thousand, two hundred eighty".