1158433272 has 128 divisors (see below), whose sum is σ = 3374784000. Its totient is φ = 367488000.

The previous prime is 1158433247. The next prime is 1158433273. The reversal of 1158433272 is 2723348511.

1158433272 is a `hidden beast` number, since 1 + 1 + 584 + 3 + 3 + 2 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158433273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1246504 + ... + 1247432.

It is an arithmetic number, because the mean of its divisors is an integer number (26365500).

Almost surely, 2^1158433272 is an apocalyptic number.

1158433272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1158433272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1687392000).

1158433272 is an abundant number, since it is smaller than the sum of its proper divisors (2216350728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1158433272 is a wasteful number, since it uses less digits than its factorization.

1158433272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1208 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1158433272 is about 34035.7646013719. The cubic root of 1158433272 is about 1050.2443186566.

The spelling of 1158433272 in words is "one billion, one hundred fifty-eight million, four hundred thirty-three thousand, two hundred seventy-two".