12289356 has 36 divisors (see below), whose sum is σ = 31171504. Its totient is φ = 4082400.

The previous prime is 12289339. The next prime is 12289367. The reversal of 12289356 is 65398221.

12289356 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12289356.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19161 + ... + 19791.

Almost surely, 2^12289356 is an apocalyptic number.

It is an amenable number.

12289356 is an abundant number, since it is smaller than the sum of its proper divisors (18882148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12289356 is a wasteful number, since it uses less digits than its factorization.

12289356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182 (or 1177 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 12289356 is about 3505.6177772256. The cubic root of 12289356 is about 230.7684191766.

The spelling of 12289356 in words is "twelve million, two hundred eighty-nine thousand, three hundred fifty-six".