12151644 has 12 divisors (see below), whose sum is σ = 28353864. Its totient is φ = 4050544.

The previous prime is 12151639. The next prime is 12151661. The reversal of 12151644 is 44615121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506307 + ... + 506330.

It is an arithmetic number, because the mean of its divisors is an integer number (2362822).

Almost surely, 2^12151644 is an apocalyptic number.

It is an amenable number.

12151644 is an abundant number, since it is smaller than the sum of its proper divisors (16202220).

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

12151644 is a wasteful number, since it uses less digits than its factorization.

12151644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012644 (or 1012642 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 12151644 is about 3485.9208252627. The cubic root of 12151644 is about 229.9031980793.

Adding to 12151644 its reverse (44615121), we get a palindrome (56766765).

The spelling of 12151644 in words is "twelve million, one hundred fifty-one thousand, six hundred forty-four".