21341332 has 48 divisors (see below), whose sum is σ = 42537600. Its totient is φ = 9313920.

The previous prime is 21341317. The next prime is 21341339. The reversal of 21341332 is 23314312.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21341339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50482 + ... + 50902.

It is an arithmetic number, because the mean of its divisors is an integer number (886200).

Almost surely, 2^21341332 is an apocalyptic number.

It is an amenable number.

21341332 is a deficient number, since it is larger than the sum of its proper divisors (21196268).

21341332 is a wasteful number, since it uses less digits than its factorization.

21341332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 494 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 21341332 is about 4619.6679534356. The cubic root of 21341332 is about 277.3791676948.

Adding to 21341332 its reverse (23314312), we get a palindrome (44655644).

The spelling of 21341332 in words is "twenty-one million, three hundred forty-one thousand, three hundred thirty-two".