1228612 has 24 divisors (see below), whose sum is σ = 2681280. Its totient is φ = 478560.

The previous prime is 1228603. The next prime is 1228613. The reversal of 1228612 is 2168221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1228613) by changing a digit.

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, 1687 + ... + 2302.

It is an arithmetic number, because the mean of its divisors is an integer number (111720).

2^1228612 is an apocalyptic number.

It is an amenable number.

1228612 is an abundant number, since it is smaller than the sum of its proper divisors (1452668).

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

1228612 is a wasteful number, since it uses less digits than its factorization.

1228612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011 (or 4009 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 1228612 is about 1108.4277152796. The cubic root of 1228612 is about 107.1038093476.

The spelling of 1228612 in words is "one million, two hundred twenty-eight thousand, six hundred twelve".