12198738 has 16 divisors (see below), whose sum is σ = 24732576. Its totient is φ = 4010400.

The previous prime is 12198691. The next prime is 12198751. The reversal of 12198738 is 83789121.

It is a junction number, because it is equal to n+sod(n) for n = 12198696 and 12198705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13488 + ... + 14363.

It is an arithmetic number, because the mean of its divisors is an integer number (1545786).

Almost surely, 2^12198738 is an apocalyptic number.

12198738 is an abundant number, since it is smaller than the sum of its proper divisors (12533838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12198738 is a wasteful number, since it uses less digits than its factorization.

12198738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27929.

The product of its digits is 24192, while the sum is 39.

The square root of 12198738 is about 3492.6691798680. The cubic root of 12198738 is about 230.1998137580.

The spelling of 12198738 in words is "twelve million, one hundred ninety-eight thousand, seven hundred thirty-eight".