12277144 has 32 divisors (see below), whose sum is σ = 25341840. Its totient is φ = 5575680.

The previous prime is 12277129. The next prime is 12277151. The reversal of 12277144 is 44177221.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10072 + ... + 11224.

Almost surely, 2^12277144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12277144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12670920).

12277144 is an abundant number, since it is smaller than the sum of its proper divisors (13064696).

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

12277144 is a wasteful number, since it uses less digits than its factorization.

12277144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192 (or 1166 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 12277144 is about 3503.8755685669. The cubic root of 12277144 is about 230.6919552318.

It can be divided in two parts, 12277 and 144, that added together give a palindrome (12421).

The spelling of 12277144 in words is "twelve million, two hundred seventy-seven thousand, one hundred forty-four".