12206406 has 16 divisors (see below), whose sum is σ = 24450624. Its totient is φ = 4062504.

The previous prime is 12206401. The next prime is 12206423. The reversal of 12206406 is 60460221.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12206401) 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, 4321 + ... + 6563.

It is an arithmetic number, because the mean of its divisors is an integer number (1528164).

Almost surely, 2^12206406 is an apocalyptic number.

12206406 is an abundant number, since it is smaller than the sum of its proper divisors (12244218).

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

12206406 is a wasteful number, since it uses less digits than its factorization.

12206406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 12206406 is about 3493.7667352014. The cubic root of 12206406 is about 230.2480373925.

Adding to 12206406 its reverse (60460221), we get a palindrome (72666627).

It can be divided in two parts, 1220 and 6406, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 12206406 in words is "twelve million, two hundred six thousand, four hundred six".