21335068 has 48 divisors (see below), whose sum is σ = 42336000. Its totient is φ = 9354240.

The previous prime is 21335063. The next prime is 21335071. The reversal of 21335068 is 86053312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21335063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60958 + ... + 61306.

It is an arithmetic number, because the mean of its divisors is an integer number (882000).

Almost surely, 2^21335068 is an apocalyptic number.

It is an amenable number.

21335068 is a deficient number, since it is larger than the sum of its proper divisors (21000932).

21335068 is a wasteful number, since it uses less digits than its factorization.

21335068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 21335068 is about 4618.9899328749. The cubic root of 21335068 is about 277.3520267283.

The spelling of 21335068 in words is "twenty-one million, three hundred thirty-five thousand, sixty-eight".