21060752 has 20 divisors (see below), whose sum is σ = 41299440. Its totient is φ = 10402848.

The previous prime is 21060751. The next prime is 21060763. The reversal of 21060752 is 25706012.

It is not an unprimeable number, because it can be changed into a prime (21060751) 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, 6602 + ... + 9257.

It is an arithmetic number, because the mean of its divisors is an integer number (2064972).

Almost surely, 2^21060752 is an apocalyptic number.

It is an amenable number.

21060752 is a deficient number, since it is larger than the sum of its proper divisors (20238688).

21060752 is a wasteful number, since it uses less digits than its factorization.

21060752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15950 (or 15944 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 21060752 is about 4589.1994944652. The cubic root of 21060752 is about 276.1582093705.

Adding to 21060752 its reverse (25706012), we get a palindrome (46766764).

It can be divided in two parts, 21060 and 752, that added together give a palindrome (21812).

The spelling of 21060752 in words is "twenty-one million, sixty thousand, seven hundred fifty-two".