20364845 has 8 divisors (see below), whose sum is σ = 24519264. Its totient is φ = 16237584.

The previous prime is 20364829. The next prime is 20364847. The reversal of 20364845 is 54846302.

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 20364845 - 2⁴ = 20364829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20364847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5099 + ... + 8168.

It is an arithmetic number, because the mean of its divisors is an integer number (3064908).

Almost surely, 2^20364845 is an apocalyptic number.

It is an amenable number.

20364845 is a deficient number, since it is larger than the sum of its proper divisors (4154419).

20364845 is a wasteful number, since it uses less digits than its factorization.

20364845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13579.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 20364845 is about 4512.7425142589. The cubic root of 20364845 is about 273.0823949483.

The spelling of 20364845 in words is "twenty million, three hundred sixty-four thousand, eight hundred forty-five".