20704306 has 16 divisors (see below), whose sum is σ = 35678016. Its totient is φ = 8827056.

The previous prime is 20704279. The next prime is 20704309. The reversal of 20704306 is 60340702.

It is not an unprimeable number, because it can be changed into a prime (20704309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996 + ... + 6511.

It is an arithmetic number, because the mean of its divisors is an integer number (2229876).

Almost surely, 2^20704306 is an apocalyptic number.

20704306 is a deficient number, since it is larger than the sum of its proper divisors (14973710).

20704306 is a wasteful number, since it uses less digits than its factorization.

20704306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7713.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 20704306 is about 4550.1984572104. The cubic root of 20704306 is about 274.5913754917.

The spelling of 20704306 in words is "twenty million, seven hundred four thousand, three hundred six".