23020805 has 8 divisors (see below), whose sum is σ = 29250072. Its totient is φ = 17333248.

The previous prime is 23020793. The next prime is 23020831. The reversal of 23020805 is 50802032.

It is a Cunningham number, because it is equal to 4798²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 8282884 + 14737921 = 2878^2 + 3839^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23020805 - 2²⁰ = 21972229 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 135332 + ... + 135501.

It is an arithmetic number, because the mean of its divisors is an integer number (3656259).

Almost surely, 2^23020805 is an apocalyptic number.

It is an amenable number.

23020805 is a deficient number, since it is larger than the sum of its proper divisors (6229267).

23020805 is a wasteful number, since it uses less digits than its factorization.

23020805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270855.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 23020805 is about 4798.0001042101. Note that the first 3 decimals coincide. The cubic root of 23020805 is about 284.4724209148.

Adding to 23020805 its reverse (50802032), we get a palindrome (73822837).

The spelling of 23020805 in words is "twenty-three million, twenty thousand, eight hundred five".