11628381 has 8 divisors (see below), whose sum is σ = 15531264. Its totient is φ = 7738880.

The previous prime is 11628373. The next prime is 11628401. The reversal of 11628381 is 18382611.

11628381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11628381 - 2³ = 11628373 is a prime.

It is a super-2 number, since 2×11628381² = 270438489362322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11628301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101 + ... + 4946.

It is an arithmetic number, because the mean of its divisors is an integer number (1941408).

Almost surely, 2^11628381 is an apocalyptic number.

It is an amenable number.

11628381 is a deficient number, since it is larger than the sum of its proper divisors (3902883).

11628381 is an equidigital number, since it uses as much as digits as its factorization.

11628381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6691.

The product of its digits is 2304, while the sum is 30.

The square root of 11628381 is about 3410.0412020971. The cubic root of 11628381 is about 226.5547041725.

The spelling of 11628381 in words is "eleven million, six hundred twenty-eight thousand, three hundred eighty-one".