21411192 has 96 divisors (see below), whose sum is σ = 60233040. Its totient is φ = 6336000.

The previous prime is 21411161. The next prime is 21411199. The reversal of 21411192 is 29111412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411199) 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 23 ways as a sum of consecutive naturals, for example, 211942 + ... + 212042.

Almost surely, 2^21411192 is an apocalyptic number.

21411192 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21411192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30116520).

21411192 is an abundant number, since it is smaller than the sum of its proper divisors (38821848).

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

21411192 is a wasteful number, since it uses less digits than its factorization.

21411192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 190 counting only the distinct ones).

The product of its digits is 144, while the sum is 21.

The square root of 21411192 is about 4627.2229252544. Note that the first 3 decimals coincide. The cubic root of 21411192 is about 277.6815012600.

It can be divided in two parts, 2141 and 1192, that added together give a palindrome (3333).

The spelling of 21411192 in words is "twenty-one million, four hundred eleven thousand, one hundred ninety-two".