21935336 has 16 divisors (see below), whose sum is σ = 41285700. Its totient is φ = 10925824.

The previous prime is 21935311. The next prime is 21935357. The reversal of 21935336 is 63353912.

It can be written as a sum of positive squares in 2 ways, for example, as 21436900 + 498436 = 4630^2 + 706^2 .

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, 2945 + ... + 7248.

Almost surely, 2^21935336 is an apocalyptic number.

It is an amenable number.

21935336 is a deficient number, since it is larger than the sum of its proper divisors (19350364).

21935336 is a wasteful number, since it uses less digits than its factorization.

21935336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10468 (or 10464 counting only the distinct ones).

The product of its digits is 14580, while the sum is 32.

The square root of 21935336 is about 4683.5174815517. The cubic root of 21935336 is about 279.9291317245.

The spelling of 21935336 in words is "twenty-one million, nine hundred thirty-five thousand, three hundred thirty-six".