11856534 has 16 divisors (see below), whose sum is σ = 24531120. Its totient is φ = 3815840.

The previous prime is 11856517. The next prime is 11856541. The reversal of 11856534 is 43565811.

It is a junction number, because it is equal to n+sod(n) for n = 11856495 and 11856504.

It is a congruent number.

It is an unprimeable number.

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, 33897 + ... + 34244.

It is an arithmetic number, because the mean of its divisors is an integer number (1533195).

Almost surely, 2^11856534 is an apocalyptic number.

11856534 is an abundant number, since it is smaller than the sum of its proper divisors (12674586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11856534 is a wasteful number, since it uses less digits than its factorization.

11856534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68175.

The product of its digits is 14400, while the sum is 33.

The square root of 11856534 is about 3443.3318167147. The cubic root of 11856534 is about 228.0268127901.

The spelling of 11856534 in words is "eleven million, eight hundred fifty-six thousand, five hundred thirty-four".