21041344 has 28 divisors (see below), whose sum is σ = 42030904. Its totient is φ = 10450944.

The previous prime is 21041309. The next prime is 21041353. The reversal of 21041344 is 44314012.

21041344 is nontrivially palindromic in base 14.

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, 9424 + ... + 11440.

Almost surely, 2^21041344 is an apocalyptic number.

It is an amenable number.

21041344 is a deficient number, since it is larger than the sum of its proper divisors (20989560).

21041344 is a wasteful number, since it uses less digits than its factorization.

21041344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192 (or 2182 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 21041344 is about 4587.0844770944. The cubic root of 21041344 is about 276.0733544434.

Adding to 21041344 its reverse (44314012), we get a palindrome (65355356).

The spelling of 21041344 in words is "twenty-one million, forty-one thousand, three hundred forty-four".