12198915 has 24 divisors (see below), whose sum is σ = 21340800. Its totient is φ = 6445824.

The previous prime is 12198913. The next prime is 12198917. The reversal of 12198915 is 51989121.

It is an interprime number because it is at equal distance from previous prime (12198913) and next prime (12198917).

It is not a de Polignac number, because 12198915 - 2¹ = 12198913 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12198915.

It is not an unprimeable number, because it can be changed into a prime (12198913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3886 + ... + 6284.

It is an arithmetic number, because the mean of its divisors is an integer number (889200).

Almost surely, 2^12198915 is an apocalyptic number.

12198915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12198915 is a deficient number, since it is larger than the sum of its proper divisors (9141885).

12198915 is a wasteful number, since it uses less digits than its factorization.

12198915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523 (or 2520 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 12198915 is about 3492.6945185630. The cubic root of 12198915 is about 230.2009271292.

The spelling of 12198915 in words is "twelve million, one hundred ninety-eight thousand, nine hundred fifteen".