12198845 has 8 divisors (see below), whose sum is σ = 14658360. Its totient is φ = 9745920.

The previous prime is 12198839. The next prime is 12198847. The reversal of 12198845 is 54889121.

It can be written as a sum of positive squares in 4 ways, for example, as 241081 + 11957764 = 491^2 + 3458^2 .

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

It is not a de Polignac number, because 12198845 - 2⁴ = 12198829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12198799 and 12198808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12198847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4565 + ... + 6725.

It is an arithmetic number, because the mean of its divisors is an integer number (1832295).

Almost surely, 2^12198845 is an apocalyptic number.

It is an amenable number.

12198845 is a deficient number, since it is larger than the sum of its proper divisors (2459515).

12198845 is a wasteful number, since it uses less digits than its factorization.

12198845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3295.

The product of its digits is 23040, while the sum is 38.

The square root of 12198845 is about 3492.6844976322. The cubic root of 12198845 is about 230.2004868142.

The spelling of 12198845 in words is "twelve million, one hundred ninety-eight thousand, eight hundred forty-five".