12955644 has 144 divisors (see below), whose sum is σ = 39137280. Its totient is φ = 3576960.

The previous prime is 12955639. The next prime is 12955669. The reversal of 12955644 is 44655921.

12955644 is a `hidden beast` number, since 1 + 2 + 9 + 5 + 5 + 644 = 666.

It is a super-2 number, since 2×12955644² = 335697422909472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (43200) is a multiple of the sum of its prime factors (120).

It is a junction number, because it is equal to n+sod(n) for n = 12955599 and 12955608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 275629 + ... + 275675.

Almost surely, 2^12955644 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 12955644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19568640).

12955644 is an abundant number, since it is smaller than the sum of its proper divisors (26181636).

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

12955644 is a wasteful number, since it uses less digits than its factorization.

12955644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 115 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 12955644 is about 3599.3949491546. The cubic root of 12955644 is about 234.8657389109.

It can be divided in two parts, 129556 and 44, that added together give a square (129600 = 360²).

The spelling of 12955644 in words is "twelve million, nine hundred fifty-five thousand, six hundred forty-four".