20708718 has 8 divisors (see below), whose sum is σ = 41417448. Its totient is φ = 6902904.

The previous prime is 20708693. The next prime is 20708729. The reversal of 20708718 is 81780702.

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

20708718 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1725721 + ... + 1725732.

It is an arithmetic number, because the mean of its divisors is an integer number (5177181).

Almost surely, 2^20708718 is an apocalyptic number.

20708718 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20708718 is a wasteful number, since it uses less digits than its factorization.

20708718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451458.

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 20708718 is about 4550.6832454039. The cubic root of 20708718 is about 274.6108788598.

The spelling of 20708718 in words is "twenty million, seven hundred eight thousand, seven hundred eighteen".