21350968 has 16 divisors (see below), whose sum is σ = 40267080. Its totient is φ = 10613088.

The previous prime is 21350933. The next prime is 21350999. The reversal of 21350968 is 86905312.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 6330 + ... + 9097.

Almost surely, 2^21350968 is an apocalyptic number.

It is an amenable number.

21350968 is a deficient number, since it is larger than the sum of its proper divisors (18916112).

21350968 is a wasteful number, since it uses less digits than its factorization.

21350968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15606 (or 15602 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 21350968 is about 4620.7107678365. The cubic root of 21350968 is about 277.4209086615.

The spelling of 21350968 in words is "twenty-one million, three hundred fifty thousand, nine hundred sixty-eight".