12261528 has 24 divisors (see below), whose sum is σ = 33208500. Its totient is φ = 4087152.

The previous prime is 12261527. The next prime is 12261533. The reversal of 12261528 is 82516221.

It is a happy number.

12261528 is a `hidden beast` number, since 1 + 22 + 615 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261521) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 85078 + ... + 85221.

Almost surely, 2^12261528 is an apocalyptic number.

12261528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12261528 is an abundant number, since it is smaller than the sum of its proper divisors (20946972).

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

12261528 is a wasteful number, since it uses less digits than its factorization.

12261528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170311 (or 170304 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 12261528 is about 3501.6464698767. The cubic root of 12261528 is about 230.5941036452.

Adding to 12261528 its reverse (82516221), we get a palindrome (94777749).

The spelling of 12261528 in words is "twelve million, two hundred sixty-one thousand, five hundred twenty-eight".