21041152 has 52 divisors (see below), whose sum is σ = 46000656. Its totient is φ = 9543680.

The previous prime is 21041117. The next prime is 21041191. The reversal of 21041152 is 25114012.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44823 + ... + 45289.

It is an arithmetic number, because the mean of its divisors is an integer number (884628).

Almost surely, 2^21041152 is an apocalyptic number.

21041152 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 21041152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23000328).

21041152 is an abundant number, since it is smaller than the sum of its proper divisors (24959504).

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

21041152 is an equidigital number, since it uses as much as digits as its factorization.

21041152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 21041152 is about 4587.0635487205. The cubic root of 21041152 is about 276.0725147276.

Adding to 21041152 its reverse (25114012), we get a palindrome (46155164).

The spelling of 21041152 in words is "twenty-one million, forty-one thousand, one hundred fifty-two".