1140028 has 6 divisors (see below), whose sum is σ = 1995056.
Its totient is φ = 570012.
The previous prime is 1139993. The next prime is 1140091. The reversal of 1140028 is 8200411.
It is a happy number.
It is a plaindrome in base 15.
It is a junction number, because it is equal to n+sod(n) for n = 1139993 and 1140020.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142500 + ... + 142507.
21140028 is an apocalyptic number.
It is an amenable number.
1140028 is a deficient number, since it is larger than the sum of its proper divisors (855028).
1140028 is a wasteful number, since it uses less digits than its factorization.
1140028 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 285011 (or 285009 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 16.
The square root of 1140028 is about 1067.7209373240.
The cubic root of 1140028 is about 104.4652479393.
Adding to 1140028 its reverse (8200411), we get a palindrome (9340439).
The spelling of 1140028 in words is "one million, one hundred forty thousand, twenty-eight".