2309795840 has 104 divisors (see below), whose sum is σ = 6047317008. Its totient is φ = 839843840.

The previous prime is 2309795837. The next prime is 2309795849. The reversal of 2309795840 is 485979032.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2309795849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220154 + ... + 230406.

Almost surely, 2^2309795840 is an apocalyptic number.

2309795840 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 2309795840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3023658504).

2309795840 is an abundant number, since it is smaller than the sum of its proper divisors (3737521168).

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

2309795840 is a wasteful number, since it uses less digits than its factorization.

2309795840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10293 (or 10271 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 2309795840 is about 48060.3354128953. The cubic root of 2309795840 is about 1321.8774630599.

The spelling of 2309795840 in words is "two billion, three hundred nine million, seven hundred ninety-five thousand, eight hundred forty".