1128537 has 12 divisors (see below), whose sum is σ = 1674660. Its totient is φ = 731808.

The previous prime is 1128527. The next prime is 1128539. The reversal of 1128537 is 7358211.

1128537 is a `hidden beast` number, since 1 + 128 + 537 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1058841 + 69696 = 1029^2 + 264^2 .

It is not a de Polignac number, because 1128537 - 2⁴ = 1128521 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1128537.

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 11 ways as a sum of consecutive naturals, for example, 1362 + ... + 2027.

It is an arithmetic number, because the mean of its divisors is an integer number (139555).

2^1128537 is an apocalyptic number.

It is an amenable number.

1128537 is a deficient number, since it is larger than the sum of its proper divisors (546123).

1128537 is a wasteful number, since it uses less digits than its factorization.

1128537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432 (or 3429 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 1128537 is about 1062.3262210828. The cubic root of 1128537 is about 104.1130735158.

It can be divided in two parts, 112 and 8537, that added together give a square (8649 = 93²).

The spelling of 1128537 in words is "one million, one hundred twenty-eight thousand, five hundred thirty-seven".