20733616 has 20 divisors (see below), whose sum is σ = 41258272. Its totient is φ = 10086336.

The previous prime is 20733613. The next prime is 20733631. The reversal of 20733616 is 61633702.

It is not an unprimeable number, because it can be changed into a prime (20733613) 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 3 ways as a sum of consecutive naturals, for example, 16920 + ... + 18103.

Almost surely, 2^20733616 is an apocalyptic number.

It is an amenable number.

20733616 is a deficient number, since it is larger than the sum of its proper divisors (20524656).

20733616 is a wasteful number, since it uses less digits than its factorization.

20733616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35068 (or 35062 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 20733616 is about 4553.4180568008. The cubic root of 20733616 is about 274.7208892647.

The spelling of 20733616 in words is "twenty million, seven hundred thirty-three thousand, six hundred sixteen".