1128530 has 16 divisors (see below), whose sum is σ = 2187864. Its totient is φ = 416640.

The previous prime is 1128527. The next prime is 1128539. The reversal of 1128530 is 358211.

It can be written as a sum of positive squares in 4 ways, for example, as 885481 + 243049 = 941^2 + 493^2 .

It is not an unprimeable number, because it can be changed into a prime (1128539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4211 + ... + 4470.

2^1128530 is an apocalyptic number.

1128530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128530 is a deficient number, since it is larger than the sum of its proper divisors (1059334).

1128530 is a wasteful number, since it uses less digits than its factorization.

1128530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8701.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1128530 is about 1062.3229264212. The cubic root of 1128530 is about 104.1128582539.

The spelling of 1128530 in words is "one million, one hundred twenty-eight thousand, five hundred thirty".