11091894 has 32 divisors (see below), whose sum is σ = 24796800. Its totient is φ = 3278400.

The previous prime is 11091889. The next prime is 11091907. The reversal of 11091894 is 49819011.

It is a super-2 number, since 2×11091894² = 246060225014472, which contains 22 as substring.

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

It is a congruent number.

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, 657 + ... + 4755.

It is an arithmetic number, because the mean of its divisors is an integer number (774900).

Almost surely, 2^11091894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11091894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12398400).

11091894 is an abundant number, since it is smaller than the sum of its proper divisors (13704906).

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

11091894 is a wasteful number, since it uses less digits than its factorization.

11091894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4156.

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

The square root of 11091894 is about 3330.4495192091. The cubic root of 11091894 is about 223.0155967829.

It can be divided in two parts, 1109 and 1894, that added together give a palindrome (3003).

The spelling of 11091894 in words is "eleven million, ninety-one thousand, eight hundred ninety-four".