12197438 has 24 divisors (see below), whose sum is σ = 20428200. Its totient is φ = 5416800.

The previous prime is 12197413. The next prime is 12197441. The reversal of 12197438 is 83479121.

It is a junction number, because it is equal to n+sod(n) for n = 12197398 and 12197407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81788 + ... + 81936.

It is an arithmetic number, because the mean of its divisors is an integer number (851175).

Almost surely, 2^12197438 is an apocalyptic number.

12197438 is a deficient number, since it is larger than the sum of its proper divisors (8230762).

12197438 is a wasteful number, since it uses less digits than its factorization.

12197438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 223 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 12197438 is about 3492.4830708251. The cubic root of 12197438 is about 230.1916361255.

The spelling of 12197438 in words is "twelve million, one hundred ninety-seven thousand, four hundred thirty-eight".