12194540 has 24 divisors (see below), whose sum is σ = 25815552. Its totient is φ = 4838400.

The previous prime is 12194537. The next prime is 12194543. The reversal of 12194540 is 4549121.

12194540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12194537) and next prime (12194543).

It is not an unprimeable number, because it can be changed into a prime (12194543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140 + ... + 4940.

It is an arithmetic number, because the mean of its divisors is an integer number (1075648).

Almost surely, 2^12194540 is an apocalyptic number.

12194540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12194540 is an abundant number, since it is smaller than the sum of its proper divisors (13621012).

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

12194540 is a wasteful number, since it uses less digits than its factorization.

12194540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4937 (or 4935 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12194540 is about 3492.0681551195. The cubic root of 12194540 is about 230.1734042039.

The spelling of 12194540 in words is "twelve million, one hundred ninety-four thousand, five hundred forty".