11678281 has 4 divisors (see below), whose sum is σ = 11688192. Its totient is φ = 11668372.

The previous prime is 11678279. The next prime is 11678297. The reversal of 11678281 is 18287611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18287611 = 1877 ⋅9743.

It is a cyclic number.

It is not a de Polignac number, because 11678281 - 2¹ = 11678279 is a prime.

It is a super-2 number, since 2×11678281² = 272764494229922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (11678221) 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, 2905 + ... + 5638.

It is an arithmetic number, because the mean of its divisors is an integer number (2922048).

Almost surely, 2^11678281 is an apocalyptic number.

It is an amenable number.

11678281 is a deficient number, since it is larger than the sum of its proper divisors (9911).

11678281 is an equidigital number, since it uses as much as digits as its factorization.

11678281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9910.

The product of its digits is 5376, while the sum is 34.

The square root of 11678281 is about 3417.3499967080. The cubic root of 11678281 is about 226.8783074697.

The spelling of 11678281 in words is "eleven million, six hundred seventy-eight thousand, two hundred eighty-one".