21346652 has 18 divisors (see below), whose sum is σ = 39428928. Its totient is φ = 10110888.

The previous prime is 21346627. The next prime is 21346657. The reversal of 21346652 is 25664312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21346657) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 5948 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (2190496).

Almost surely, 2^21346652 is an apocalyptic number.

It is an amenable number.

21346652 is a deficient number, since it is larger than the sum of its proper divisors (18082276).

21346652 is a wasteful number, since it uses less digits than its factorization.

21346652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14825 (or 14804 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 21346652 is about 4620.2437165154. The cubic root of 21346652 is about 277.4022142814.

The spelling of 21346652 in words is "twenty-one million, three hundred forty-six thousand, six hundred fifty-two".