12200440 has 32 divisors (see below), whose sum is σ = 31373280. Its totient is φ = 4182912.

The previous prime is 12200437. The next prime is 12200443. The reversal of 12200440 is 4400221.

It is an interprime number because it is at equal distance from previous prime (12200437) and next prime (12200443).

It is a self number, because there is not a number n which added to its sum of digits gives 12200440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21507 + ... + 22066.

It is an arithmetic number, because the mean of its divisors is an integer number (980415).

Almost surely, 2^12200440 is an apocalyptic number.

12200440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12200440 is an abundant number, since it is smaller than the sum of its proper divisors (19172840).

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

12200440 is a wasteful number, since it uses less digits than its factorization.

12200440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43591 (or 43587 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 12200440 is about 3492.9128245635. The cubic root of 12200440 is about 230.2105192879.

Adding to 12200440 its reverse (4400221), we get a palindrome (16600661).

The spelling of 12200440 in words is "twelve million, two hundred thousand, four hundred forty".