11728085 has 4 divisors (see below), whose sum is σ = 14073708. Its totient is φ = 9382464.

The previous prime is 11728061. The next prime is 11728099. The reversal of 11728085 is 58082711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58082711 = 37 ⋅1569803.

It can be written as a sum of positive squares in 2 ways, for example, as 5769604 + 5958481 = 2402^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 11728085 - 2⁶ = 11728021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172804 + ... + 1172813.

It is an arithmetic number, because the mean of its divisors is an integer number (3518427).

Almost surely, 2^11728085 is an apocalyptic number.

It is an amenable number.

11728085 is a deficient number, since it is larger than the sum of its proper divisors (2345623).

11728085 is an equidigital number, since it uses as much as digits as its factorization.

11728085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345622.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 11728085 is about 3424.6291770059. The cubic root of 11728085 is about 227.2003703480.

The spelling of 11728085 in words is "eleven million, seven hundred twenty-eight thousand, eighty-five".