1128877 has 4 divisors (see below), whose sum is σ = 1140156. Its totient is φ = 1117600.

The previous prime is 1128823. The next prime is 1128889. The reversal of 1128877 is 7788211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1042441 + 86436 = 1021^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128877 - 2¹⁹ = 604589 is a prime.

It is a super-2 number, since 2×1128877² = 2548726562258, which contains 22 as substring.

It is an Ulam number.

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 (1128577) 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, 5488 + ... + 5689.

It is an arithmetic number, because the mean of its divisors is an integer number (285039).

2^1128877 is an apocalyptic number.

It is an amenable number.

1128877 is a deficient number, since it is larger than the sum of its proper divisors (11279).

1128877 is a wasteful number, since it uses less digits than its factorization.

1128877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11278.

The product of its digits is 6272, while the sum is 34.

The square root of 1128877 is about 1062.4862352050. The cubic root of 1128877 is about 104.1235280219.

The spelling of 1128877 in words is "one million, one hundred twenty-eight thousand, eight hundred seventy-seven".