20704762 has 8 divisors (see below), whose sum is σ = 33446196. Its totient is φ = 9556032.

The previous prime is 20704729. The next prime is 20704763. The reversal of 20704762 is 26740702.

It can be written as a sum of positive squares in 2 ways, for example, as 20241001 + 463761 = 4499^2 + 681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20704762.

It is not an unprimeable number, because it can be changed into a prime (20704763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398143 + ... + 398194.

Almost surely, 2^20704762 is an apocalyptic number.

20704762 is a deficient number, since it is larger than the sum of its proper divisors (12741434).

20704762 is a wasteful number, since it uses less digits than its factorization.

20704762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796352.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20704762 is about 4550.2485646391. The cubic root of 20704762 is about 274.5933913807.

The spelling of 20704762 in words is "twenty million, seven hundred four thousand, seven hundred sixty-two".