12661952 has 42 divisors (see below), whose sum is σ = 25964388. Its totient is φ = 6125952.

The previous prime is 12661949. The next prime is 12661973. The reversal of 12661952 is 25916621.

It is a happy number.

12661952 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118283 + ... + 118389.

Almost surely, 2^12661952 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 12661952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12982194).

12661952 is an abundant number, since it is smaller than the sum of its proper divisors (13302436).

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

12661952 is an equidigital number, since it uses as much as digits as its factorization.

12661952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 152 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 12661952 is about 3558.3636688793. The cubic root of 12661952 is about 233.0774301039.

The spelling of 12661952 in words is "twelve million, six hundred sixty-one thousand, nine hundred fifty-two".