1139268 has 48 divisors (see below), whose sum is σ = 2932160.
Its totient is φ = 342144.
The previous prime is 1139263. The next prime is 1139269. The reversal of 1139268 is 8629311.
It is not an unprimeable number, because it can be changed into a prime (1139263) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10398 + ... + 10506.
21139268 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 1139268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1466080).
1139268 is an abundant number, since it is smaller than the sum of its proper divisors (1792892).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1139268 is a wasteful number, since it uses less digits than its factorization.
1139268 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 196 (or 194 counting only the distinct ones).
The product of its digits is 2592, while the sum is 30.
The square root of 1139268 is about 1067.3649797515.
The cubic root of 1139268 is about 104.4420288495.
The spelling of 1139268 in words is "one million, one hundred thirty-nine thousand, two hundred sixty-eight".