12242250 has 48 divisors (see below), whose sum is σ = 33109128. Its totient is φ = 3264000.

The previous prime is 12242221. The next prime is 12242257. The reversal of 12242250 is 5224221.

It can be written as a sum of positive squares in 4 ways, for example, as 4968441 + 7273809 = 2229^2 + 2697^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12242257) 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 23 ways as a sum of consecutive naturals, for example, 471 + ... + 4970.

Almost surely, 2^12242250 is an apocalyptic number.

12242250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12242250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16554564).

12242250 is an abundant number, since it is smaller than the sum of its proper divisors (20866878).

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

12242250 is a wasteful number, since it uses less digits than its factorization.

12242250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464 (or 5451 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 12242250 is about 3498.8926819781. The cubic root of 12242250 is about 230.4731909036.

Adding to 12242250 its reverse (5224221), we get a palindrome (17466471).

The spelling of 12242250 in words is "twelve million, two hundred forty-two thousand, two hundred fifty".