1228136 has 48 divisors (see below), whose sum is σ = 2896740. Its totient is φ = 483840.

The previous prime is 1228133. The next prime is 1228147. The reversal of 1228136 is 6318221.

It can be written as a sum of positive squares in 2 ways, for example, as 1223236 + 4900 = 1106^2 + 70^2 .

It is not an unprimeable number, because it can be changed into a prime (1228133) 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 11 ways as a sum of consecutive naturals, for example, 4976 + ... + 5216.

2^1228136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1448370).

1228136 is an abundant number, since it is smaller than the sum of its proper divisors (1668604).

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

1228136 is a wasteful number, since it uses less digits than its factorization.

1228136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 263 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 1228136 is about 1108.2129759211. The cubic root of 1228136 is about 107.0899758514.

The spelling of 1228136 in words is "one million, two hundred twenty-eight thousand, one hundred thirty-six".