11738281 has 4 divisors (see below), whose sum is σ = 11959812. Its totient is φ = 11516752.

The previous prime is 11738267. The next prime is 11738317. The reversal of 11738281 is 18283711.

It is a happy number.

11738281 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 3182656 + 8555625 = 1784^2 + 2925^2 .

It is a cyclic number.

It is not a de Polignac number, because 11738281 - 2⁵ = 11738249 is a prime.

It is a super-2 number, since 2×11738281² = 275574481669922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (11738231) 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, 110686 + ... + 110791.

It is an arithmetic number, because the mean of its divisors is an integer number (2989953).

Almost surely, 2^11738281 is an apocalyptic number.

It is an amenable number.

11738281 is a deficient number, since it is larger than the sum of its proper divisors (221531).

11738281 is an equidigital number, since it uses as much as digits as its factorization.

11738281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221530.

The product of its digits is 2688, while the sum is 31.

The square root of 11738281 is about 3426.1174819320. The cubic root of 11738281 is about 227.2661913805.

The spelling of 11738281 in words is "eleven million, seven hundred thirty-eight thousand, two hundred eighty-one".