2309888 has 36 divisors (see below), whose sum is σ = 5273520. Its totient is φ = 989184.

The previous prime is 2309869. The next prime is 2309891. The reversal of 2309888 is 8889032.

It is a congruent number.

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, 1148 + ... + 2436.

2^2309888 is an apocalyptic number.

2309888 is a gapful number since it is divisible by the number (28) 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 2309888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2636760).

2309888 is an abundant number, since it is smaller than the sum of its proper divisors (2963632).

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

2309888 is an equidigital number, since it uses as much as digits as its factorization.

2309888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1298 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 2309888 is about 1519.8315696155. The cubic root of 2309888 is about 132.1895043633.

The spelling of 2309888 in words is "two million, three hundred nine thousand, eight hundred eighty-eight".