12045450 has 48 divisors (see below), whose sum is σ = 30149856. Its totient is φ = 3182400.

The previous prime is 12045443. The next prime is 12045457. The reversal of 12045450 is 5454021.

It is an interprime number because it is at equal distance from previous prime (12045443) and next prime (12045457).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12045457) 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, 19344 + ... + 19956.

It is an arithmetic number, because the mean of its divisors is an integer number (628122).

Almost surely, 2^12045450 is an apocalyptic number.

12045450 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 12045450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15074928).

12045450 is an abundant number, since it is smaller than the sum of its proper divisors (18104406).

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

12045450 is a wasteful number, since it uses less digits than its factorization.

12045450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 12045450 is about 3470.6555576721. The cubic root of 12045450 is about 229.2315247094.

Adding to 12045450 its reverse (5454021), we get a palindrome (17499471).

The spelling of 12045450 in words is "twelve million, forty-five thousand, four hundred fifty".