27420224 has 28 divisors (see below), whose sum is σ = 58599324. Its totient is φ = 12655104.

The previous prime is 27420193. The next prime is 27420229. The reversal of 27420224 is 42202472.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16974400 + 10445824 = 4120^2 + 3232^2 .

It is a super-4 number, since 4×27420224⁴ (a number of 31 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27420224.

It is not an unprimeable number, because it can be changed into a prime (27420229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15647 + ... + 17310.

It is an arithmetic number, because the mean of its divisors is an integer number (2092833).

Almost surely, 2^27420224 is an apocalyptic number.

It is an amenable number.

27420224 is an abundant number, since it is smaller than the sum of its proper divisors (31179100).

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

27420224 is a wasteful number, since it uses less digits than its factorization.

27420224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32982 (or 32972 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 27420224 is about 5236.4323732862. The cubic root of 27420224 is about 301.5483798359.

Adding to 27420224 its reverse (42202472), we get a palindrome (69622696).

The spelling of 27420224 in words is "twenty-seven million, four hundred twenty thousand, two hundred twenty-four".