1128047 has 4 divisors (see below), whose sum is σ = 1152096.
Its totient is φ = 1104000.
The previous prime is 1128037. The next prime is 1128089. The reversal of 1128047 is 7408211.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 1128047 - 24 = 1128031 is a prime.
It is a Duffinian number.
It is a plaindrome in base 16.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1128037) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11954 + ... + 12047.
It is an arithmetic number, because the mean of its divisors is an integer number (288024).
21128047 is an apocalyptic number.
1128047 is a deficient number, since it is larger than the sum of its proper divisors (24049).
1128047 is an equidigital number, since it uses as much as digits as its factorization.
1128047 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 24048.
The product of its (nonzero) digits is 448, while the sum is 23.
The square root of 1128047 is about 1062.0955700877.
The cubic root of 1128047 is about 104.0980030333.
The spelling of 1128047 in words is "one million, one hundred twenty-eight thousand, forty-seven".