27879222 has 48 divisors (see below), whose sum is σ = 65422080. Its totient is φ = 7758576.

The previous prime is 27879193. The next prime is 27879227. The reversal of 27879222 is 22297872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27879227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77479 + ... + 77837.

It is an arithmetic number, because the mean of its divisors is an integer number (1362960).

Almost surely, 2^27879222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27879222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32711040).

27879222 is an abundant number, since it is smaller than the sum of its proper divisors (37542858).

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

27879222 is a wasteful number, since it uses less digits than its factorization.

27879222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 414 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 27879222 is about 5280.0778403353. The cubic root of 27879222 is about 303.2216570208.

The spelling of 27879222 in words is "twenty-seven million, eight hundred seventy-nine thousand, two hundred twenty-two".