1227812 has 6 divisors (see below), whose sum is σ = 2148678. Its totient is φ = 613904.

The previous prime is 1227797. The next prime is 1227829. The reversal of 1227812 is 2187221.

It can be written as a sum of positive squares in only one way, i.e., 1196836 + 30976 = 1094^2 + 176^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153473 + ... + 153480.

It is an arithmetic number, because the mean of its divisors is an integer number (358113).

2^1227812 is an apocalyptic number.

It is an amenable number.

1227812 is a deficient number, since it is larger than the sum of its proper divisors (920866).

1227812 is a wasteful number, since it uses less digits than its factorization.

1227812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306957 (or 306955 counting only the distinct ones).

The product of its digits is 448, while the sum is 23.

The square root of 1227812 is about 1108.0667849909. The cubic root of 1227812 is about 107.0805577294.

The spelling of 1227812 in words is "one million, two hundred twenty-seven thousand, eight hundred twelve".