12244540 has 48 divisors (see below), whose sum is σ = 32062464. Its totient is φ = 3816000.

The previous prime is 12244523. The next prime is 12244543. The reversal of 12244540 is 4544221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12244543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2436 + ... + 5515.

It is an arithmetic number, because the mean of its divisors is an integer number (667968).

Almost surely, 2^12244540 is an apocalyptic number.

12244540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12244540 is an abundant number, since it is smaller than the sum of its proper divisors (19817924).

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

12244540 is a wasteful number, since it uses less digits than its factorization.

12244540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7978 (or 7976 counting only the distinct ones).

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

The square root of 12244540 is about 3499.2199130663. The cubic root of 12244540 is about 230.4875605579.

Adding to 12244540 its reverse (4544221), we get a palindrome (16788761).

The spelling of 12244540 in words is "twelve million, two hundred forty-four thousand, five hundred forty".