7222168 has 8 divisors (see below), whose sum is σ = 13541580. Its totient is φ = 3611080.

The previous prime is 7222153. The next prime is 7222177. The reversal of 7222168 is 8612227.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451378 + ... + 451393.

Almost surely, 2^7222168 is an apocalyptic number.

It is an amenable number.

7222168 is a deficient number, since it is larger than the sum of its proper divisors (6319412).

7222168 is a wasteful number, since it uses less digits than its factorization.

7222168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902777 (or 902773 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 7222168 is about 2687.4091612555. The cubic root of 7222168 is about 193.2958495173.

The spelling of 7222168 in words is "seven million, two hundred twenty-two thousand, one hundred sixty-eight".