21363352 has 16 divisors (see below), whose sum is σ = 40655160. Its totient is φ = 10521984.

The previous prime is 21363347. The next prime is 21363361. The reversal of 21363352 is 25336312.

It is a happy number.

It is a congruent 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, 19393 + ... + 20464.

Almost surely, 2^21363352 is an apocalyptic number.

It is an amenable number.

21363352 is a deficient number, since it is larger than the sum of its proper divisors (19291808).

21363352 is a wasteful number, since it uses less digits than its factorization.

21363352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39930 (or 39926 counting only the distinct ones).

The product of its digits is 3240, while the sum is 25.

The square root of 21363352 is about 4622.0506271567. The cubic root of 21363352 is about 277.4745349032.

Adding to 21363352 its reverse (25336312), we get a palindrome (46699664).

The spelling of 21363352 in words is "twenty-one million, three hundred sixty-three thousand, three hundred fifty-two".