11038681 has 4 divisors (see below), whose sum is σ = 11247012. Its totient is φ = 10830352.

The previous prime is 11038669. The next prime is 11038721. The reversal of 11038681 is 18683011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2944656 + 8094025 = 1716^2 + 2845^2 .

It is a cyclic number.

It is not a de Polignac number, because 11038681 - 2⁵ = 11038649 is a prime.

It is a super-2 number, since 2×11038681² = 243704956439522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11738681) 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, 104086 + ... + 104191.

It is an arithmetic number, because the mean of its divisors is an integer number (2811753).

Almost surely, 2^11038681 is an apocalyptic number.

It is an amenable number.

11038681 is a deficient number, since it is larger than the sum of its proper divisors (208331).

11038681 is an equidigital number, since it uses as much as digits as its factorization.

11038681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208330.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 11038681 is about 3322.4510530631. The cubic root of 11038681 is about 222.6583882544.

The spelling of 11038681 in words is "eleven million, thirty-eight thousand, six hundred eighty-one".