12243550 has 48 divisors (see below), whose sum is σ = 25190352. Its totient is φ = 4390400.

The previous prime is 12243541. The next prime is 12243551. The reversal of 12243550 is 5534221.

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 (12243551) 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, 62052 + ... + 62248.

It is an arithmetic number, because the mean of its divisors is an integer number (524799).

Almost surely, 2^12243550 is an apocalyptic number.

12243550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12243550 is an abundant number, since it is smaller than the sum of its proper divisors (12946802).

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

12243550 is a wasteful number, since it uses less digits than its factorization.

12243550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 12243550 is about 3499.0784501065. The cubic root of 12243550 is about 230.4813485692.

Adding to 12243550 its reverse (5534221), we get a palindrome (17777771).

It can be divided in two parts, 1224 and 3550, that added together give a palindrome (4774).

The spelling of 12243550 in words is "twelve million, two hundred forty-three thousand, five hundred fifty".