2309864256 has 448 divisors, whose sum is σ = 8427110400. Its totient is φ = 605380608.

The previous prime is 2309864237. The next prime is 2309864267. The reversal of 2309864256 is 6524689032.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×2309864256² = 10670945762292867072, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9664585 + ... + 9664823.

Almost surely, 2^2309864256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2309864256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4213555200).

2309864256 is an abundant number, since it is smaller than the sum of its proper divisors (6117246144).

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

2309864256 is a wasteful number, since it uses less digits than its factorization.

2309864256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 2309864256 is about 48061.0471796027. The cubic root of 2309864256 is about 1321.8905142387.

The spelling of 2309864256 in words is "two billion, three hundred nine million, eight hundred sixty-four thousand, two hundred fifty-six".