1128297 has 4 divisors (see below), whose sum is σ = 1504400. Its totient is φ = 752196.

The previous prime is 1128293. The next prime is 1128299. The reversal of 1128297 is 7928211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1128297 - 2² = 1128293 is a prime.

It is a super-4 number, since 4×1128297⁴ (a number of 25 digits) contains 4444 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128293) 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 3 ways as a sum of consecutive naturals, for example, 188047 + ... + 188052.

It is an arithmetic number, because the mean of its divisors is an integer number (376100).

2^1128297 is an apocalyptic number.

It is an amenable number.

1128297 is a deficient number, since it is larger than the sum of its proper divisors (376103).

1128297 is an equidigital number, since it uses as much as digits as its factorization.

1128297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376102.

The product of its digits is 2016, while the sum is 30.

The square root of 1128297 is about 1062.2132554247. The cubic root of 1128297 is about 104.1056926002.

The spelling of 1128297 in words is "one million, one hundred twenty-eight thousand, two hundred ninety-seven".