8220643048 has 16 divisors (see below), whose sum is σ = 15414790500. Its totient is φ = 4110032256.

The previous prime is 8220643001. The next prime is 8220643051. The reversal of 8220643048 is 8403460228.

It can be written as a sum of positive squares in 2 ways, for example, as 7676913924 + 543729124 = 87618^2 + 23318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8220642998 and 8220643016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128988 + ... + 181876.

Almost surely, 2^8220643048 is an apocalyptic number.

It is an amenable number.

8220643048 is a deficient number, since it is larger than the sum of its proper divisors (7194147452).

8220643048 is a wasteful number, since it uses less digits than its factorization.

8220643048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72324 (or 72320 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 8220643048 is about 90667.7619002477. The cubic root of 8220643048 is about 2018.2204246554.

The spelling of 8220643048 in words is "eight billion, two hundred twenty million, six hundred forty-three thousand, forty-eight".