11856047 has 8 divisors (see below), whose sum is σ = 13805856. Its totient is φ = 9970272.

The previous prime is 11856023. The next prime is 11856049. The reversal of 11856047 is 74065811.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11856047 - 2¹⁰ = 11855023 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 (11856049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15608 + ... + 16349.

It is an arithmetic number, because the mean of its divisors is an integer number (1725732).

Almost surely, 2^11856047 is an apocalyptic number.

11856047 is a deficient number, since it is larger than the sum of its proper divisors (1949809).

11856047 is an equidigital number, since it uses as much as digits as its factorization.

11856047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32017.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 11856047 is about 3443.2610995973. The cubic root of 11856047 is about 228.0236907259.

Subtracting from 11856047 its sum of digits (32), we obtain a triangular number (11856015 = T₄₈₆₉).

It can be divided in two parts, 118 and 56047, that added together give a palindrome (56165).

The spelling of 11856047 in words is "eleven million, eight hundred fifty-six thousand, forty-seven".