12254440 has 32 divisors (see below), whose sum is σ = 30080160. Its totient is φ = 4456000.

The previous prime is 12254419. The next prime is 12254447. The reversal of 12254440 is 4445221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (12254447) 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, 13486 + ... + 14365.

It is an arithmetic number, because the mean of its divisors is an integer number (940005).

Almost surely, 2^12254440 is an apocalyptic number.

12254440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12254440 is an abundant number, since it is smaller than the sum of its proper divisors (17825720).

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

12254440 is a wasteful number, since it uses less digits than its factorization.

12254440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27873 (or 27869 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 12254440 is about 3500.6342282506. The cubic root of 12254440 is about 230.5496620376.

Adding to 12254440 its reverse (4445221), we get a palindrome (16699661).

It can be divided in two parts, 1225 and 4440, that added together give a palindrome (5665).

The spelling of 12254440 in words is "twelve million, two hundred fifty-four thousand, four hundred forty".