11681736 has 32 divisors (see below), whose sum is σ = 31860000. Its totient is φ = 3539840.

The previous prime is 11681731. The next prime is 11681741. The reversal of 11681736 is 63718611.

It is an interprime number because it is at equal distance from previous prime (11681731) and next prime (11681741).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 11681697 and 11681706.

It is not an unprimeable number, because it can be changed into a prime (11681731) 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, 21861 + ... + 22388.

It is an arithmetic number, because the mean of its divisors is an integer number (995625).

Almost surely, 2^11681736 is an apocalyptic number.

It is an amenable number.

11681736 is an abundant number, since it is smaller than the sum of its proper divisors (20178264).

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

11681736 is a wasteful number, since it uses less digits than its factorization.

11681736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44269 (or 44265 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 11681736 is about 3417.8554679799. The cubic root of 11681736 is about 226.9006791202.

The spelling of 11681736 in words is "eleven million, six hundred eighty-one thousand, seven hundred thirty-six".