11928191 has 8 divisors (see below), whose sum is σ = 13578624. Its totient is φ = 10372120.

The previous prime is 11928173. The next prime is 11928209. The reversal of 11928191 is 19182911.

It is an interprime number because it is at equal distance from previous prime (11928173) and next prime (11928209).

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

It is not a de Polignac number, because 11928191 - 2¹⁴ = 11911807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11928151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23321 + ... + 23826.

It is an arithmetic number, because the mean of its divisors is an integer number (1697328).

Almost surely, 2^11928191 is an apocalyptic number.

11928191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11928191 is a deficient number, since it is larger than the sum of its proper divisors (1650433).

11928191 is a wasteful number, since it uses less digits than its factorization.

11928191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47181.

The product of its digits is 1296, while the sum is 32.

The square root of 11928191 is about 3453.7213263377. The cubic root of 11928191 is about 228.4852635230.

The spelling of 11928191 in words is "eleven million, nine hundred twenty-eight thousand, one hundred ninety-one".