1158988 has 24 divisors (see below), whose sum is σ = 2145024. Its totient is φ = 547200.

The previous prime is 1158977. The next prime is 1158991. The reversal of 1158988 is 8898511.

It is a self number, because there is not a number n which added to its sum of digits gives 1158988.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5973 + ... + 6163.

It is an arithmetic number, because the mean of its divisors is an integer number (89376).

2^1158988 is an apocalyptic number.

It is an amenable number.

1158988 is a deficient number, since it is larger than the sum of its proper divisors (986036).

1158988 is a wasteful number, since it uses less digits than its factorization.

1158988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 271 counting only the distinct ones).

The product of its digits is 23040, while the sum is 40.

The square root of 1158988 is about 1076.5630497096. The cubic root of 1158988 is about 105.0411932098.

The spelling of 1158988 in words is "one million, one hundred fifty-eight thousand, nine hundred eighty-eight".