11406381 has 8 divisors (see below), whose sum is σ = 17381184. Its totient is φ = 6517920.

The previous prime is 11406359. The next prime is 11406391. The reversal of 11406381 is 18360411.

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

It is not a de Polignac number, because 11406381 - 2¹⁴ = 11389997 is a prime.

It is a super-2 number, since 2×11406381² = 260211055034322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11406331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271560 + ... + 271601.

It is an arithmetic number, because the mean of its divisors is an integer number (2172648).

Almost surely, 2^11406381 is an apocalyptic number.

It is an amenable number.

11406381 is a deficient number, since it is larger than the sum of its proper divisors (5974803).

11406381 is an equidigital number, since it uses as much as digits as its factorization.

11406381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543171.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 11406381 is about 3377.3334155810. Note that the first 3 decimals coincide. The cubic root of 11406381 is about 225.1036954126.

Adding to 11406381 its reverse (18360411), we get a palindrome (29766792).

The spelling of 11406381 in words is "eleven million, four hundred six thousand, three hundred eighty-one".