27224220 has 24 divisors (see below), whose sum is σ = 76227984. Its totient is φ = 7259776.

The previous prime is 27224209. The next prime is 27224227. The reversal of 27224220 is 2242272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27224227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226809 + ... + 226928.

It is an arithmetic number, because the mean of its divisors is an integer number (3176166).

Almost surely, 2^27224220 is an apocalyptic number.

27224220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27224220 is an abundant number, since it is smaller than the sum of its proper divisors (49003764).

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

27224220 is a wasteful number, since it uses less digits than its factorization.

27224220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453749 (or 453747 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 27224220 is about 5217.6833939978. The cubic root of 27224220 is about 300.8281561985.

Adding to 27224220 its reverse (2242272), we get a palindrome (29466492).

The spelling of 27224220 in words is "twenty-seven million, two hundred twenty-four thousand, two hundred twenty".