12861532 has 6 divisors (see below), whose sum is σ = 22507688. Its totient is φ = 6430764.

The previous prime is 12861517. The next prime is 12861553. The reversal of 12861532 is 23516821.

It is a self number, because there is not a number n which added to its sum of digits gives 12861532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607688 + ... + 1607695.

Almost surely, 2^12861532 is an apocalyptic number.

It is an amenable number.

12861532 is a deficient number, since it is larger than the sum of its proper divisors (9646156).

12861532 is a wasteful number, since it uses less digits than its factorization.

12861532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215387 (or 3215385 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 12861532 is about 3586.2978125080. The cubic root of 12861532 is about 234.2956547296.

The spelling of 12861532 in words is "twelve million, eight hundred sixty-one thousand, five hundred thirty-two".