11890086 has 64 divisors (see below), whose sum is σ = 27578880. Its totient is φ = 3386880.

The previous prime is 11890079. The next prime is 11890091. The reversal of 11890086 is 68009811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105166 + ... + 105278.

It is an arithmetic number, because the mean of its divisors is an integer number (430920).

Almost surely, 2^11890086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11890086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13789440).

11890086 is an abundant number, since it is smaller than the sum of its proper divisors (15688794).

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

11890086 is a wasteful number, since it uses less digits than its factorization.

11890086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 11890086 is about 3448.2004002088. The cubic root of 11890086 is about 228.2417027448.

Adding to 11890086 its reverse (68009811), we get a palindrome (79899897).

The spelling of 11890086 in words is "eleven million, eight hundred ninety thousand, eighty-six".