21160352 has 48 divisors (see below), whose sum is σ = 43690752. Its totient is φ = 10076160.

The previous prime is 21160339. The next prime is 21160379. The reversal of 21160352 is 25306112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82208 + ... + 82464.

It is an arithmetic number, because the mean of its divisors is an integer number (910224).

Almost surely, 2^21160352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21160352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21845376).

21160352 is an abundant number, since it is smaller than the sum of its proper divisors (22530400).

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

21160352 is a wasteful number, since it uses less digits than its factorization.

21160352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 21160352 is about 4600.0382607104. The cubic root of 21160352 is about 276.5928584908.

Adding to 21160352 its reverse (25306112), we get a palindrome (46466464).

Subtracting 21160352 from its reverse (25306112), we obtain a triangular number (4145760 = T₂₈₇₉).

It can be divided in two parts, 21160 and 352, that added together give a palindrome (21512).

The spelling of 21160352 in words is "twenty-one million, one hundred sixty thousand, three hundred fifty-two".