1228406 has 8 divisors (see below), whose sum is σ = 1902144. Its totient is φ = 594360.

The previous prime is 1228399. The next prime is 1228429. The reversal of 1228406 is 6048221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9845 + ... + 9968.

It is an arithmetic number, because the mean of its divisors is an integer number (237768).

2^1228406 is an apocalyptic number.

1228406 is a deficient number, since it is larger than the sum of its proper divisors (673738).

1228406 is a wasteful number, since it uses less digits than its factorization.

1228406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19846.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1228406 is about 1108.3347869665. The cubic root of 1228406 is about 107.0978230211.

The spelling of 1228406 in words is "one million, two hundred twenty-eight thousand, four hundred six".