12206140 has 24 divisors (see below), whose sum is σ = 25723152. Its totient is φ = 4865280.

The previous prime is 12206101. The next prime is 12206143. The reversal of 12206140 is 4160221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12206143) 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, 5835 + ... + 7645.

It is an arithmetic number, because the mean of its divisors is an integer number (1071798).

Almost surely, 2^12206140 is an apocalyptic number.

12206140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12206140 is an abundant number, since it is smaller than the sum of its proper divisors (13517012).

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

12206140 is a wasteful number, since it uses less digits than its factorization.

12206140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157 (or 2155 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 12206140 is about 3493.7286671978. The cubic root of 12206140 is about 230.2463648711.

Adding to 12206140 its reverse (4160221), we get a palindrome (16366361).

The spelling of 12206140 in words is "twelve million, two hundred six thousand, one hundred forty".