12261450 has 48 divisors (see below), whose sum is σ = 31131936. Its totient is φ = 3192000.

The previous prime is 12261449. The next prime is 12261463. The reversal of 12261450 is 5416221.

It is a super-2 number, since 2×12261450² = 300686312205000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5500 + ... + 7400.

It is an arithmetic number, because the mean of its divisors is an integer number (648582).

Almost surely, 2^12261450 is an apocalyptic number.

12261450 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 12261450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15565968).

12261450 is an abundant number, since it is smaller than the sum of its proper divisors (18870486).

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

12261450 is a wasteful number, since it uses less digits than its factorization.

12261450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959 (or 1954 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12261450 is about 3501.6353322412. The cubic root of 12261450 is about 230.5936146801.

Adding to 12261450 its reverse (5416221), we get a palindrome (17677671).

The spelling of 12261450 in words is "twelve million, two hundred sixty-one thousand, four hundred fifty".