12267778 has 8 divisors (see below), whose sum is σ = 19484172. Its totient is φ = 5773056.

The previous prime is 12267743. The next prime is 12267779. The reversal of 12267778 is 87776221.

It can be written as a sum of positive squares in 2 ways, for example, as 11923209 + 344569 = 3453^2 + 587^2 .

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

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 12267778.

It is not an unprimeable number, because it can be changed into a prime (12267779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180375 + ... + 180442.

Almost surely, 2^12267778 is an apocalyptic number.

12267778 is a deficient number, since it is larger than the sum of its proper divisors (7216394).

12267778 is a wasteful number, since it uses less digits than its factorization.

12267778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360836.

The product of its digits is 65856, while the sum is 40.

The square root of 12267778 is about 3502.5387935039. The cubic root of 12267778 is about 230.6332768038.

The spelling of 12267778 in words is "twelve million, two hundred sixty-seven thousand, seven hundred seventy-eight".