8268721480 has 32 divisors (see below), whose sum is σ = 18622419840. Its totient is φ = 3304324800.

The previous prime is 8268721469. The next prime is 8268721493. The reversal of 8268721480 is 841278628.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8268721480.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56304 + ... + 140383.

It is an arithmetic number, because the mean of its divisors is an integer number (581950620).

Almost surely, 2^8268721480 is an apocalyptic number.

It is an amenable number.

8268721480 is an abundant number, since it is smaller than the sum of its proper divisors (10353698360).

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

8268721480 is a wasteful number, since it uses less digits than its factorization.

8268721480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197749 (or 197745 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 8268721480 is about 90932.5105779006. The cubic root of 8268721480 is about 2022.1472999431.

The spelling of 8268721480 in words is "eight billion, two hundred sixty-eight million, seven hundred twenty-one thousand, four hundred eighty".