4307821056 has 800 divisors, whose sum is σ = 17111761920. Its totient is φ = 1045094400.

The previous prime is 4307820997. The next prime is 4307821057. The reversal of 4307821056 is 6501287034.

4307821056 is a `hidden beast` number, since 430 + 7 + 8 + 210 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 4307821056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4307821057) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 60673501 + ... + 60673571.

Almost surely, 2^4307821056 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 4307821056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8555880960).

4307821056 is an abundant number, since it is smaller than the sum of its proper divisors (12803940864).

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

4307821056 is a wasteful number, since it uses less digits than its factorization.

4307821056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 4307821056 is about 65633.9931437971. The cubic root of 4307821056 is about 1627.1186322119.

The spelling of 4307821056 in words is "four billion, three hundred seven million, eight hundred twenty-one thousand, fifty-six".