11328691 has 4 divisors (see below), whose sum is σ = 12358584. Its totient is φ = 10298800.

The previous prime is 11328677. The next prime is 11328701. The reversal of 11328691 is 19682311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11328691 - 2⁵ = 11328659 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11328631) 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, 514930 + ... + 514951.

It is an arithmetic number, because the mean of its divisors is an integer number (3089646).

Almost surely, 2^11328691 is an apocalyptic number.

11328691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11328691 is a deficient number, since it is larger than the sum of its proper divisors (1029893).

11328691 is a wasteful number, since it uses less digits than its factorization.

11328691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029892.

The product of its digits is 2592, while the sum is 31.

The square root of 11328691 is about 3365.8120862579. The cubic root of 11328691 is about 224.5914627746.

The spelling of 11328691 in words is "eleven million, three hundred twenty-eight thousand, six hundred ninety-one".