11923668 has 18 divisors (see below), whose sum is σ = 30140474. Its totient is φ = 3974544.

The previous prime is 11923663. The next prime is 11923687. The reversal of 11923668 is 86632911.

It can be written as a sum of positive squares in only one way, i.e., 8191044 + 3732624 = 2862^2 + 1932^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 331213 = 11923668 / (1 + 1 + 9 + 2 + 3 + 6 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11923663) 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 5 ways as a sum of consecutive naturals, for example, 165571 + ... + 165642.

Almost surely, 2^11923668 is an apocalyptic number.

11923668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11923668 is an abundant number, since it is smaller than the sum of its proper divisors (18216806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11923668 is a wasteful number, since it uses less digits than its factorization.

11923668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331223 (or 331218 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 11923668 is about 3453.0664633048. The cubic root of 11923668 is about 228.4563804203.

The spelling of 11923668 in words is "eleven million, nine hundred twenty-three thousand, six hundred sixty-eight".