8447072256 has 384 divisors, whose sum is σ = 28986048000. Its totient is φ = 2380824576.

The previous prime is 8447072239. The next prime is 8447072261. The reversal of 8447072256 is 6522707448.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53802930 + ... + 53803086.

It is an arithmetic number, because the mean of its divisors is an integer number (75484500).

Almost surely, 2^8447072256 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 8447072256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14493024000).

8447072256 is an abundant number, since it is smaller than the sum of its proper divisors (20538975744).

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

8447072256 is a wasteful number, since it uses less digits than its factorization.

8447072256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The square root of 8447072256 is about 91907.9553466402. The cubic root of 8447072256 is about 2036.5827911322.

The spelling of 8447072256 in words is "eight billion, four hundred forty-seven million, seventy-two thousand, two hundred fifty-six".