8266981272 has 128 divisors (see below), whose sum is σ = 24161276160. Its totient is φ = 2329272320.

The previous prime is 8266981271. The next prime is 8266981279. The reversal of 8266981272 is 2721896628.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8266981271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361408 + ... + 383600.

It is an arithmetic number, because the mean of its divisors is an integer number (188759970).

Almost surely, 2^8266981272 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 8266981272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12080638080).

8266981272 is an abundant number, since it is smaller than the sum of its proper divisors (15894294888).

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

8266981272 is a wasteful number, since it uses less digits than its factorization.

8266981272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22313 (or 22309 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 8266981272 is about 90922.9413954476. The cubic root of 8266981272 is about 2022.0054318276.

The spelling of 8266981272 in words is "eight billion, two hundred sixty-six million, nine hundred eighty-one thousand, two hundred seventy-two".