2398720 has 40 divisors (see below), whose sum is σ = 5757444. Its totient is φ = 958464.

The previous prime is 2398699. The next prime is 2398777. The reversal of 2398720 is 278932.

2398720 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2119936 + 278784 = 1456^2 + 528^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2092 + ... + 3028.

2^2398720 is an apocalyptic number.

2398720 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 2398720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2878722).

2398720 is an abundant number, since it is smaller than the sum of its proper divisors (3358724).

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

2398720 is an frugal number, since it uses more digits than its factorization.

2398720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 2398720 is about 1548.7801651622. The cubic root of 2398720 is about 133.8627837233.

The spelling of 2398720 in words is "two million, three hundred ninety-eight thousand, seven hundred twenty".