7228216867 has 4 divisors (see below), whose sum is σ = 7231614120. Its totient is φ = 7224819616.

The previous prime is 7228216843. The next prime is 7228216901. The reversal of 7228216867 is 7686128227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7228216867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7228216867.

It is not an unprimeable number, because it can be changed into a prime (7228216367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1695433 + ... + 1699690.

It is an arithmetic number, because the mean of its divisors is an integer number (1807903530).

Almost surely, 2^7228216867 is an apocalyptic number.

7228216867 is a deficient number, since it is larger than the sum of its proper divisors (3397253).

7228216867 is a wasteful number, since it uses less digits than its factorization.

7228216867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397252.

The product of its digits is 903168, while the sum is 49.

The square root of 7228216867 is about 85018.9206412314. The cubic root of 7228216867 is about 1933.4979890448.

The spelling of 7228216867 in words is "seven billion, two hundred twenty-eight million, two hundred sixteen thousand, eight hundred sixty-seven".