27421227 has 8 divisors (see below), whose sum is σ = 40624080. Its totient is φ = 18280800.

The previous prime is 27421223. The next prime is 27421231. The reversal of 27421227 is 72212472.

It is an interprime number because it is at equal distance from previous prime (27421223) and next prime (27421231).

It is not a de Polignac number, because 27421227 - 2² = 27421223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1015601 = 27421227 / (2 + 7 + 4 + 2 + 1 + 2 + 2 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 27421227.

It is not an unprimeable number, because it can be changed into a prime (27421223) 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, 507774 + ... + 507827.

It is an arithmetic number, because the mean of its divisors is an integer number (5078010).

Almost surely, 2^27421227 is an apocalyptic number.

27421227 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

27421227 is a deficient number, since it is larger than the sum of its proper divisors (13202853).

27421227 is a wasteful number, since it uses less digits than its factorization.

27421227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015610 (or 1015604 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 27421227 is about 5236.5281437227. The cubic root of 27421227 is about 301.5520565544.

Adding to 27421227 its reverse (72212472), we get a palindrome (99633699).

It can be divided in two parts, 2742 and 1227, that added together give a square (3969 = 63²).

The spelling of 27421227 in words is "twenty-seven million, four hundred twenty-one thousand, two hundred twenty-seven".