8447261076 has 72 divisors (see below), whose sum is σ = 21868086240. Its totient is φ = 2747916864.

The previous prime is 8447261071. The next prime is 8447261077. The reversal of 8447261076 is 6701627448.

It is a super-2 number, since 2×8447261076² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8447261071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3610315 + ... + 3612653.

It is an arithmetic number, because the mean of its divisors is an integer number (303723420).

Almost surely, 2^8447261076 is an apocalyptic number.

8447261076 is a gapful number since it is divisible by the number (86) 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 8447261076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10934043120).

8447261076 is an abundant number, since it is smaller than the sum of its proper divisors (13420825164).

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

8447261076 is a wasteful number, since it uses less digits than its factorization.

8447261076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725 (or 4720 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 8447261076 is about 91908.9825642739. The cubic root of 8447261076 is about 2036.5979658060.

The spelling of 8447261076 in words is "eight billion, four hundred forty-seven million, two hundred sixty-one thousand, seventy-six".