20708706 has 16 divisors (see below), whose sum is σ = 41553504. Its totient is φ = 6880224.

The previous prime is 20708693. The next prime is 20708729. The reversal of 20708706 is 60780702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3636 + ... + 7391.

It is an arithmetic number, because the mean of its divisors is an integer number (2597094).

Almost surely, 2^20708706 is an apocalyptic number.

20708706 is an abundant number, since it is smaller than the sum of its proper divisors (20844798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20708706 is a wasteful number, since it uses less digits than its factorization.

20708706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11345.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 20708706 is about 4550.6819269204. The cubic root of 20708706 is about 274.6108258173.

The spelling of 20708706 in words is "twenty million, seven hundred eight thousand, seven hundred six".