21411160 has 96 divisors (see below), whose sum is σ = 54704160. Its totient is φ = 7501824.

The previous prime is 21411149. The next prime is 21411161. The reversal of 21411160 is 6111412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 578662 + ... + 578698.

It is an arithmetic number, because the mean of its divisors is an integer number (569835).

Almost surely, 2^21411160 is an apocalyptic number.

21411160 is a gapful number since it is divisible by the number (20) 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 21411160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27352080).

21411160 is an abundant number, since it is smaller than the sum of its proper divisors (33293000).

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

21411160 is a wasteful number, since it uses less digits than its factorization.

21411160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 21411160 is about 4627.2194674556. The cubic root of 21411160 is about 277.6813629241.

Adding to 21411160 its reverse (6111412), we get a palindrome (27522572).

The spelling of 21411160 in words is "twenty-one million, four hundred eleven thousand, one hundred sixty".