11528899 has 4 divisors (see below), whose sum is σ = 11537640. Its totient is φ = 11520160.

The previous prime is 11528897. The next prime is 11528927. The reversal of 11528899 is 99882511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 99882511 = 1699 ⋅58789.

It is a cyclic number.

It is not a de Polignac number, because 11528899 - 2¹ = 11528897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11528897) 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, 1942 + ... + 5179.

It is an arithmetic number, because the mean of its divisors is an integer number (2884410).

Almost surely, 2^11528899 is an apocalyptic number.

11528899 is a deficient number, since it is larger than the sum of its proper divisors (8741).

11528899 is an equidigital number, since it uses as much as digits as its factorization.

11528899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8740.

The product of its digits is 51840, while the sum is 43.

The square root of 11528899 is about 3395.4232431318. The cubic root of 11528899 is about 225.9067866830.

The spelling of 11528899 in words is "eleven million, five hundred twenty-eight thousand, eight hundred ninety-nine".