12197738 has 32 divisors (see below), whose sum is σ = 22581504. Its totient is φ = 4822272.

The previous prime is 12197737. The next prime is 12197747. The reversal of 12197738 is 83779121.

It is not an unprimeable number, because it can be changed into a prime (12197737) 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, 12131 + ... + 13097.

It is an arithmetic number, because the mean of its divisors is an integer number (705672).

Almost surely, 2^12197738 is an apocalyptic number.

12197738 is a deficient number, since it is larger than the sum of its proper divisors (10383766).

12197738 is a wasteful number, since it uses less digits than its factorization.

12197738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046.

The product of its digits is 21168, while the sum is 38.

The square root of 12197738 is about 3492.5260199460. The cubic root of 12197738 is about 230.1935233231.

The spelling of 12197738 in words is "twelve million, one hundred ninety-seven thousand, seven hundred thirty-eight".