21060452 has 24 divisors (see below), whose sum is σ = 42658560. Its totient is φ = 8910720.

The previous prime is 21060449. The next prime is 21060469. The reversal of 21060452 is 25406012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2549 + ... + 6972.

It is an arithmetic number, because the mean of its divisors is an integer number (1777440).

Almost surely, 2^21060452 is an apocalyptic number.

It is an amenable number.

21060452 is an abundant number, since it is smaller than the sum of its proper divisors (21598108).

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

21060452 is a wasteful number, since it uses less digits than its factorization.

21060452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9611 (or 9609 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 21060452 is about 4589.1668089099. The cubic root of 21060452 is about 276.1568981186.

Adding to 21060452 its reverse (25406012), we get a palindrome (46466464).

It can be divided in two parts, 21060 and 452, that added together give a palindrome (21512).

The spelling of 21060452 in words is "twenty-one million, sixty thousand, four hundred fifty-two".