12400227 has 24 divisors (see below), whose sum is σ = 20623200. Its totient is φ = 7032960.

The previous prime is 12400183. The next prime is 12400231. The reversal of 12400227 is 72200421.

It is not a de Polignac number, because 12400227 - 2¹¹ = 12398179 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400237) 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, 8727 + ... + 10047.

It is an arithmetic number, because the mean of its divisors is an integer number (859300).

Almost surely, 2^12400227 is an apocalyptic number.

12400227 is a deficient number, since it is larger than the sum of its proper divisors (8222973).

12400227 is a wasteful number, since it uses less digits than its factorization.

12400227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 12400227 is about 3521.3956040184. The cubic root of 12400227 is about 231.4603178411.

Adding to 12400227 its reverse (72200421), we get a palindrome (84600648).

The spelling of 12400227 in words is "twelve million, four hundred thousand, two hundred twenty-seven".