12197481 has 8 divisors (see below), whose sum is σ = 16281120. Its totient is φ = 8122752.

The previous prime is 12197443. The next prime is 12197489. The reversal of 12197481 is 18479121.

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

It is a de Polignac number, because none of the positive numbers 2^k-12197481 is a prime.

It is a super-2 number, since 2×12197481² = 297557085490722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12197489) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2265 + ... + 5433.

It is an arithmetic number, because the mean of its divisors is an integer number (2035140).

Almost surely, 2^12197481 is an apocalyptic number.

It is an amenable number.

12197481 is a deficient number, since it is larger than the sum of its proper divisors (4083639).

12197481 is a wasteful number, since it uses less digits than its factorization.

12197481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455.

The product of its digits is 4032, while the sum is 33.

The square root of 12197481 is about 3492.4892268982. The cubic root of 12197481 is about 230.1919066258.

The spelling of 12197481 in words is "twelve million, one hundred ninety-seven thousand, four hundred eighty-one".