20936704 has 24 divisors (see below), whose sum is σ = 41867280. Its totient is φ = 10467328.

The previous prime is 20936683. The next prime is 20936711. The reversal of 20936704 is 40763902.

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 as a sum of consecutive naturals, namely, 3064 + ... + 7159.

It is an arithmetic number, because the mean of its divisors is an integer number (1744470).

Almost surely, 2^20936704 is an apocalyptic number.

It is an amenable number.

20936704 is a deficient number, since it is larger than the sum of its proper divisors (20930576).

20936704 is an equidigital number, since it uses as much as digits as its factorization.

20936704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10245 (or 10225 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 20936704 is about 4575.6643233524. The cubic root of 20936704 is about 275.6149500057.

The spelling of 20936704 in words is "twenty million, nine hundred thirty-six thousand, seven hundred four".