20709796 has 6 divisors (see below), whose sum is σ = 36242150. Its totient is φ = 10354896.

The previous prime is 20709781. The next prime is 20709809. The reversal of 20709796 is 69790702.

It can be written as a sum of positive squares in only one way, i.e., 18181696 + 2528100 = 4264^2 + 1590^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2588721 + ... + 2588728.

Almost surely, 2^20709796 is an apocalyptic number.

It is an amenable number.

20709796 is a deficient number, since it is larger than the sum of its proper divisors (15532354).

20709796 is a wasteful number, since it uses less digits than its factorization.

20709796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5177453 (or 5177451 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 20709796 is about 4550.8016876151. The cubic root of 20709796 is about 274.6156437676.

The spelling of 20709796 in words is "twenty million, seven hundred nine thousand, seven hundred ninety-six".