11026381 has 4 divisors (see below), whose sum is σ = 11036764. Its totient is φ = 11016000.

The previous prime is 11026373. The next prime is 11026397. The reversal of 11026381 is 18362011.

11026381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18362011 = 1723 ⋅10657.

It can be written as a sum of positive squares in 2 ways, for example, as 2418025 + 8608356 = 1555^2 + 2934^2 .

It is a cyclic number.

It is not a de Polignac number, because 11026381 - 2³ = 11026373 is a prime.

It is a super-2 number, since 2×11026381² = 243162155914322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11026321) 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, 3390 + ... + 5791.

It is an arithmetic number, because the mean of its divisors is an integer number (2759191).

Almost surely, 2^11026381 is an apocalyptic number.

It is an amenable number.

11026381 is a deficient number, since it is larger than the sum of its proper divisors (10383).

11026381 is an equidigital number, since it uses as much as digits as its factorization.

11026381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10382.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 11026381 is about 3320.5994940673. The cubic root of 11026381 is about 222.5756574760.

Adding to 11026381 its reverse (18362011), we get a palindrome (29388392).

The spelling of 11026381 in words is "eleven million, twenty-six thousand, three hundred eighty-one".