20933116 has 12 divisors (see below), whose sum is σ = 36853488. Its totient is φ = 10403552.

The previous prime is 20933111. The next prime is 20933147. The reversal of 20933116 is 61133902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20933111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15001 + ... + 16336.

It is an arithmetic number, because the mean of its divisors is an integer number (3071124).

Almost surely, 2^20933116 is an apocalyptic number.

It is an amenable number.

20933116 is a deficient number, since it is larger than the sum of its proper divisors (15920372).

20933116 is a wasteful number, since it uses less digits than its factorization.

20933116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31508 (or 31506 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 20933116 is about 4575.2722323377. The cubic root of 20933116 is about 275.5992047236.

The spelling of 20933116 in words is "twenty million, nine hundred thirty-three thousand, one hundred sixteen".