21060944 has 20 divisors (see below), whose sum is σ = 40908096. Its totient is φ = 10504032.

The previous prime is 21060929. The next prime is 21060947. The reversal of 21060944 is 44906012.

It is a super-2 number, since 2×21060944² = 887126724342272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21060947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5987 + ... + 8829.

Almost surely, 2^21060944 is an apocalyptic number.

It is an amenable number.

21060944 is a deficient number, since it is larger than the sum of its proper divisors (19847152).

21060944 is a wasteful number, since it uses less digits than its factorization.

21060944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314 (or 3308 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 21060944 is about 4589.2204130985. The cubic root of 21060944 is about 276.1590485652.

Adding to 21060944 its reverse (44906012), we get a palindrome (65966956).

The spelling of 21060944 in words is "twenty-one million, sixty thousand, nine hundred forty-four".