12864455 has 8 divisors (see below), whose sum is σ = 15473472. Its totient is φ = 10267488.

The previous prime is 12864443. The next prime is 12864457. The reversal of 12864455 is 55446821.

12864455 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 12864455 - 2²⁰ = 11815879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12864457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464 + ... + 5093.

It is an arithmetic number, because the mean of its divisors is an integer number (1934184).

Almost surely, 2^12864455 is an apocalyptic number.

12864455 is a deficient number, since it is larger than the sum of its proper divisors (2609017).

12864455 is an equidigital number, since it uses as much as digits as its factorization.

12864455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025.

The product of its digits is 38400, while the sum is 35.

The square root of 12864455 is about 3586.7053126790. The cubic root of 12864455 is about 234.3134025978.

The spelling of 12864455 in words is "twelve million, eight hundred sixty-four thousand, four hundred fifty-five".