11588881 has 8 divisors (see below), whose sum is σ = 12028520. Its totient is φ = 11155968.

The previous prime is 11588873. The next prime is 11588891. The reversal of 11588881 is 18888511.

It can be written as a sum of positive squares in 4 ways, for example, as 2588881 + 9000000 = 1609^2 + 3000^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11588881 - 2³ = 11588873 is a prime.

It is a super-2 number, since 2×11588881² = 268604325664322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11588851) 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, 1975 + ... + 5203.

It is an arithmetic number, because the mean of its divisors is an integer number (1503565).

Almost surely, 2^11588881 is an apocalyptic number.

It is an amenable number.

11588881 is a deficient number, since it is larger than the sum of its proper divisors (439639).

11588881 is an equidigital number, since it uses as much as digits as its factorization.

11588881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363.

The product of its digits is 20480, while the sum is 40.

The square root of 11588881 is about 3404.2445564325. The cubic root of 11588881 is about 226.2978881773.

The spelling of 11588881 in words is "eleven million, five hundred eighty-eight thousand, eight hundred eighty-one".