21190182 has 32 divisors (see below), whose sum is σ = 45837792. Its totient is φ = 6491904.

The previous prime is 21190181. The next prime is 21190189. The reversal of 21190182 is 28109112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21190181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24298 + ... + 25154.

It is an arithmetic number, because the mean of its divisors is an integer number (1432431).

Almost surely, 2^21190182 is an apocalyptic number.

21190182 is an abundant number, since it is smaller than the sum of its proper divisors (24647610).

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

21190182 is a wasteful number, since it uses less digits than its factorization.

21190182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 21190182 is about 4603.2794831511. The cubic root of 21190182 is about 276.7227695455.

Adding to 21190182 its reverse (28109112), we get a palindrome (49299294).

The spelling of 21190182 in words is "twenty-one million, one hundred ninety thousand, one hundred eighty-two".