8218220452 has 24 divisors (see below), whose sum is σ = 15520035776. Its totient is φ = 3785224608.

The previous prime is 8218220411. The next prime is 8218220503. The reversal of 8218220452 is 2540228128.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136938 + ... + 187585.

Almost surely, 2^8218220452 is an apocalyptic number.

It is an amenable number.

8218220452 is a deficient number, since it is larger than the sum of its proper divisors (7301815324).

8218220452 is a wasteful number, since it uses less digits than its factorization.

8218220452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325027 (or 325025 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

The square root of 8218220452 is about 90654.4011728057. The cubic root of 8218220452 is about 2018.0221509085.

The spelling of 8218220452 in words is "eight billion, two hundred eighteen million, two hundred twenty thousand, four hundred fifty-two".