12189298 has 32 divisors (see below), whose sum is σ = 21257280. Its totient is φ = 5227200.

The previous prime is 12189283. The next prime is 12189299. The reversal of 12189298 is 89298121.

12189298 = T₃₈₇ + T₃₈₈ + ... + T₅₀₇.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12189298.

It is not an unprimeable number, because it can be changed into a prime (12189299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50458 + ... + 50698.

It is an arithmetic number, because the mean of its divisors is an integer number (664290).

Almost surely, 2^12189298 is an apocalyptic number.

12189298 is a deficient number, since it is larger than the sum of its proper divisors (9067982).

12189298 is a wasteful number, since it uses less digits than its factorization.

12189298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 273 counting only the distinct ones).

The product of its digits is 20736, while the sum is 40.

The square root of 12189298 is about 3491.3175163540. The cubic root of 12189298 is about 230.1404183509.

The spelling of 12189298 in words is "twelve million, one hundred eighty-nine thousand, two hundred ninety-eight".