12326550 has 48 divisors (see below), whose sum is σ = 31410192. Its totient is φ = 3196800.

The previous prime is 12326543. The next prime is 12326557. The reversal of 12326550 is 5562321.

12326550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12326543) and next prime (12326557).

It is a self number, because there is not a number n which added to its sum of digits gives 12326550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12326557) 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, 4440 + ... + 6660.

It is an arithmetic number, because the mean of its divisors is an integer number (654379).

Almost surely, 2^12326550 is an apocalyptic number.

12326550 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 12326550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15705096).

12326550 is an abundant number, since it is smaller than the sum of its proper divisors (19083642).

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

12326550 is a wasteful number, since it uses less digits than its factorization.

12326550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273 (or 2268 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 12326550 is about 3510.9186831939. The cubic root of 12326550 is about 231.0009932305. Note that the first 3 decimals are identical.

Adding to 12326550 its reverse (5562321), we get a palindrome (17888871).

It can be divided in two parts, 12 and 326550, that multiplied together give a triangular number (3918600 = T₂₇₉₉).

The spelling of 12326550 in words is "twelve million, three hundred twenty-six thousand, five hundred fifty".