12189802 has 8 divisors (see below), whose sum is σ = 18915300. Its totient is φ = 5884704.

The previous prime is 12189781. The next prime is 12189803. The reversal of 12189802 is 20898121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11431161 + 758641 = 3381^2 + 871^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12189803) 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, 105027 + ... + 105142.

Almost surely, 2^12189802 is an apocalyptic number.

12189802 is a deficient number, since it is larger than the sum of its proper divisors (6725498).

12189802 is a wasteful number, since it uses less digits than its factorization.

12189802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210200.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 12189802 is about 3491.3896946631. The cubic root of 12189802 is about 230.1435902364.

The spelling of 12189802 in words is "twelve million, one hundred eighty-nine thousand, eight hundred two".