21241452 has 24 divisors (see below), whose sum is σ = 50122800. Its totient is φ = 7000576.

The previous prime is 21241433. The next prime is 21241453. The reversal of 21241452 is 25414212.

It is not an unprimeable number, because it can be changed into a prime (21241453) by changing a digit.

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, 8877 + ... + 11012.

It is an arithmetic number, because the mean of its divisors is an integer number (2088450).

Almost surely, 2^21241452 is an apocalyptic number.

It is an amenable number.

21241452 is an abundant number, since it is smaller than the sum of its proper divisors (28881348).

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

21241452 is a wasteful number, since it uses less digits than its factorization.

21241452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19985 (or 19983 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 21241452 is about 4608.8449746113. The cubic root of 21241452 is about 276.9457682498.

Adding to 21241452 its reverse (25414212), we get a palindrome (46655664).

The spelling of 21241452 in words is "twenty-one million, two hundred forty-one thousand, four hundred fifty-two".