11578 has 8 divisors (see below), whose sum is σ = 19872. Its totient is φ = 4956.

The previous prime is 11551. The next prime is 11579. The reversal of 11578 is 87511.

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

It is a plaindrome in base 10 and base 15.

It is a nialpdrome in base 11 and base 14.

It is not an unprimeable number, because it can be changed into a prime (11579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400 + ... + 427.

It is an arithmetic number, because the mean of its divisors is an integer number (2484).

2¹¹⁵⁷⁸ is an apocalyptic number.

11578 is a deficient number, since it is larger than the sum of its proper divisors (8294).

11578 is an equidigital number, since it uses as much as digits as its factorization.

11578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its digits is 280, while the sum is 22.

The square root of 11578 is about 107.6011152359. The cubic root of 11578 is about 22.6227041004.

The spelling of 11578 in words is "eleven thousand, five hundred seventy-eight".