21412652 has 12 divisors (see below), whose sum is σ = 37985976. Its totient is φ = 10559520.

The previous prime is 21412649. The next prime is 21412663. The reversal of 21412652 is 25621412.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36374 + ... + 36957.

It is an arithmetic number, because the mean of its divisors is an integer number (3165498).

Almost surely, 2^21412652 is an apocalyptic number.

It is an amenable number.

21412652 is a deficient number, since it is larger than the sum of its proper divisors (16573324).

21412652 is a wasteful number, since it uses less digits than its factorization.

21412652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73408 (or 73406 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 21412652 is about 4627.3806845774. The cubic root of 21412652 is about 277.6878126910.

The spelling of 21412652 in words is "twenty-one million, four hundred twelve thousand, six hundred fifty-two".