1226406 has 16 divisors (see below), whose sum is σ = 2559744. Its totient is φ = 390984.

The previous prime is 1226387. The next prime is 1226417. The reversal of 1226406 is 6046221.

It is a happy number.

It is a congruent number.

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, 4306 + ... + 4581.

It is an arithmetic number, because the mean of its divisors is an integer number (159984).

2^1226406 is an apocalyptic number.

1226406 is an abundant number, since it is smaller than the sum of its proper divisors (1333338).

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

1226406 is a wasteful number, since it uses less digits than its factorization.

1226406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8915.

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

The square root of 1226406 is about 1107.4321649654. The cubic root of 1226406 is about 107.0396685246.

The spelling of 1226406 in words is "one million, two hundred twenty-six thousand, four hundred six".