11881047 has 8 divisors (see below), whose sum is σ = 16042240. Its totient is φ = 7820280.

The previous prime is 11881027. The next prime is 11881049. The reversal of 11881047 is 74018811.

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

It is not a de Polignac number, because 11881047 - 2⁶ = 11880983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11881049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24829 + ... + 25302.

It is an arithmetic number, because the mean of its divisors is an integer number (2005280).

Almost surely, 2^11881047 is an apocalyptic number.

11881047 is a deficient number, since it is larger than the sum of its proper divisors (4161193).

11881047 is an equidigital number, since it uses as much as digits as its factorization.

11881047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50213.

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 11881047 is about 3446.8894673314. The cubic root of 11881047 is about 228.1838506327.

Adding to 11881047 its reverse (74018811), we get a palindrome (85899858).

It can be divided in two parts, 1188104 and 7, that added together give a triangular number (1188111 = T₁₅₄₁).

The spelling of 11881047 in words is "eleven million, eight hundred eighty-one thousand, forty-seven".