20708801 has 4 divisors (see below), whose sum is σ = 20898900. Its totient is φ = 20518704.

The previous prime is 20708791. The next prime is 20708819. The reversal of 20708801 is 10880702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17472400 + 3236401 = 4180^2 + 1799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20708801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20708851) 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, 94886 + ... + 95103.

It is an arithmetic number, because the mean of its divisors is an integer number (5224725).

Almost surely, 2^20708801 is an apocalyptic number.

It is an amenable number.

20708801 is a deficient number, since it is larger than the sum of its proper divisors (190099).

20708801 is a wasteful number, since it uses less digits than its factorization.

20708801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190098.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 20708801 is about 4550.6923649045. The cubic root of 20708801 is about 274.6112457371.

The spelling of 20708801 in words is "twenty million, seven hundred eight thousand, eight hundred one".