12450312 has 72 divisors (see below), whose sum is σ = 39235950. Its totient is φ = 3556224.

The previous prime is 12450311. The next prime is 12450323. The reversal of 12450312 is 21305421.

It can be written as a sum of positive squares in only one way, i.e., 12152196 + 298116 = 3486^2 + 546^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is not an unprimeable number, because it can be changed into a prime (12450311) 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 17 ways as a sum of consecutive naturals, for example, 1764 + ... + 5292.

Almost surely, 2^12450312 is an apocalyptic number.

12450312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is a pronic number, being equal to 3528×3529.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12450312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19617975).

12450312 is an abundant number, since it is smaller than the sum of its proper divisors (26785638).

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

12450312 is a wasteful number, since it uses less digits than its factorization.

12450312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555 (or 3541 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12450312 is about 3528.4999645742. The cubic root of 12450312 is about 231.7715249712.

Adding to 12450312 its reverse (21305421), we get a palindrome (33755733).

The spelling of 12450312 in words is "twelve million, four hundred fifty thousand, three hundred twelve".