1158272 has 16 divisors (see below), whose sum is σ = 2307750. Its totient is φ = 579072.

The previous prime is 1158271. The next prime is 1158293. The reversal of 1158272 is 2728511.

It can be written as a sum of positive squares in only one way, i.e., 817216 + 341056 = 904^2 + 584^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (1158271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4397 + ... + 4652.

2^1158272 is an apocalyptic number.

It is an amenable number.

1158272 is a deficient number, since it is larger than the sum of its proper divisors (1149478).

1158272 is an frugal number, since it uses more digits than its factorization.

1158272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9063 (or 9051 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 1158272 is about 1076.2304585915. The cubic root of 1158272 is about 105.0195579592.

The spelling of 1158272 in words is "one million, one hundred fifty-eight thousand, two hundred seventy-two".