8123280722 has 18 divisors (see below), whose sum is σ = 12326292837. Its totient is φ = 4015053000.

The previous prime is 8123280667. The next prime is 8123280761. The reversal of 8123280722 is 2270823218.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5638357921 + 2484922801 = 75089^2 + 49849^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=63731.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12873347 + ... + 12873977.

Almost surely, 2^8123280722 is an apocalyptic number.

8123280722 is a deficient number, since it is larger than the sum of its proper divisors (4203012115).

8123280722 is an frugal number, since it uses more digits than its factorization.

8123280722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 8123280722 is about 90129.2445435997. The cubic root of 8123280722 is about 2010.2210693871.

The spelling of 8123280722 in words is "eight billion, one hundred twenty-three million, two hundred eighty thousand, seven hundred twenty-two".