12907886 has 4 divisors (see below), whose sum is σ = 19361832. Its totient is φ = 6453942.

The previous prime is 12907883. The next prime is 12907903. The reversal of 12907886 is 68870921.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12907886² = 333227041977992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12907883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3226970 + ... + 3226973.

It is an arithmetic number, because the mean of its divisors is an integer number (4840458).

Almost surely, 2^12907886 is an apocalyptic number.

12907886 is a deficient number, since it is larger than the sum of its proper divisors (6453946).

12907886 is an equidigital number, since it uses as much as digits as its factorization.

12907886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6453945.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 12907886 is about 3592.7546534658. The cubic root of 12907886 is about 234.5767907410.

The spelling of 12907886 in words is "twelve million, nine hundred seven thousand, eight hundred eighty-six".