12884905 has 8 divisors (see below), whose sum is σ = 16867584. Its totient is φ = 9370800.

The previous prime is 12884891. The next prime is 12884923. The reversal of 12884905 is 50948821.

12884905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12884905 - 2¹³ = 12876713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117081 + ... + 117190.

It is an arithmetic number, because the mean of its divisors is an integer number (2108448).

Almost surely, 2^12884905 is an apocalyptic number.

It is an amenable number.

12884905 is a deficient number, since it is larger than the sum of its proper divisors (3982679).

12884905 is a wasteful number, since it uses less digits than its factorization.

12884905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234287.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 12884905 is about 3589.5549863458. The cubic root of 12884905 is about 234.4374957489.

The spelling of 12884905 in words is "twelve million, eight hundred eighty-four thousand, nine hundred five".