27216222 has 32 divisors (see below), whose sum is σ = 61966080. Its totient is φ = 7888320.

The previous prime is 27216221. The next prime is 27216223. The reversal of 27216222 is 22261272.

It is an interprime number because it is at equal distance from previous prime (27216221) and next prime (27216223).

It is a junction number, because it is equal to n+sod(n) for n = 27216192 and 27216201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27216221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7447 + ... + 10482.

It is an arithmetic number, because the mean of its divisors is an integer number (1936440).

Almost surely, 2^27216222 is an apocalyptic number.

27216222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27216222 is an abundant number, since it is smaller than the sum of its proper divisors (34749858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27216222 is a wasteful number, since it uses less digits than its factorization.

27216222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17968.

The product of its digits is 1344, while the sum is 24.

The square root of 27216222 is about 5216.9169056062. The cubic root of 27216222 is about 300.7986939617.

Adding to 27216222 its reverse (22261272), we get a palindrome (49477494).

The spelling of 27216222 in words is "twenty-seven million, two hundred sixteen thousand, two hundred twenty-two".