1128545 has 24 divisors (see below), whose sum is σ = 1591488. Its totient is φ = 761600.

The previous prime is 1128539. The next prime is 1128553. The reversal of 1128545 is 5458211.

It is not a de Polignac number, because 1128545 - 2⁸ = 1128289 is a prime.

It is a super-2 number, since 2×1128545² = 2547227634050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15860 + ... + 15930.

It is an arithmetic number, because the mean of its divisors is an integer number (66312).

2^1128545 is an apocalyptic number.

It is an amenable number.

1128545 is a deficient number, since it is larger than the sum of its proper divisors (462943).

1128545 is a wasteful number, since it uses less digits than its factorization.

1128545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 104 counting only the distinct ones).

The product of its digits is 1600, while the sum is 26.

The square root of 1128545 is about 1062.3299863978. The cubic root of 1128545 is about 104.1133195283.

The spelling of 1128545 in words is "one million, one hundred twenty-eight thousand, five hundred forty-five".