1228906 has 16 divisors (see below), whose sum is σ = 2142720. Its totient is φ = 517680.

The previous prime is 1228891. The next prime is 1228907. The reversal of 1228906 is 6098221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1228907) 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, 135 + ... + 1573.

It is an arithmetic number, because the mean of its divisors is an integer number (133920).

2^1228906 is an apocalyptic number.

1228906 is a deficient number, since it is larger than the sum of its proper divisors (913814).

1228906 is a wasteful number, since it uses less digits than its factorization.

1228906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1228906 is about 1108.5603276322. The cubic root of 1228906 is about 107.1123517810.

The spelling of 1228906 in words is "one million, two hundred twenty-eight thousand, nine hundred six".