12289716 has 36 divisors (see below), whose sum is σ = 31188612. Its totient is φ = 4080384.

The previous prime is 12289687. The next prime is 12289757. The reversal of 12289716 is 61798221.

It can be written as a sum of positive squares in 2 ways, for example, as 1040400 + 11249316 = 1020^2 + 3354^2 .

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 congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11626 + ... + 12638.

Almost surely, 2^12289716 is an apocalyptic number.

It is an amenable number.

12289716 is an abundant number, since it is smaller than the sum of its proper divisors (18898896).

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

12289716 is a wasteful number, since it uses less digits than its factorization.

12289716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1355 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12289716 is about 3505.6691230063. The cubic root of 12289716 is about 230.7706725038.

The spelling of 12289716 in words is "twelve million, two hundred eighty-nine thousand, seven hundred sixteen".