11161986 has 32 divisors (see below), whose sum is σ = 24558336. Its totient is φ = 3354000.

The previous prime is 11161967. The next prime is 11161991. The reversal of 11161986 is 68916111.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8001 + ... + 9291.

It is an arithmetic number, because the mean of its divisors is an integer number (767448).

Almost surely, 2^11161986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11161986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12279168).

11161986 is an abundant number, since it is smaller than the sum of its proper divisors (13396350).

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

11161986 is a wasteful number, since it uses less digits than its factorization.

11161986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438.

The product of its digits is 2592, while the sum is 33.

The square root of 11161986 is about 3340.9558512498. The cubic root of 11161986 is about 223.4843714830.

The spelling of 11161986 in words is "eleven million, one hundred sixty-one thousand, nine hundred eighty-six".