20560873 has 16 divisors (see below), whose sum is σ = 22208256. Its totient is φ = 18990400.

The previous prime is 20560867. The next prime is 20560889. The reversal of 20560873 is 37806502.

It is a cyclic number.

It is not a de Polignac number, because 20560873 - 2²¹ = 18463721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20560853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123036 + ... + 123202.

It is an arithmetic number, because the mean of its divisors is an integer number (1388016).

Almost surely, 2^20560873 is an apocalyptic number.

20560873 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20560873 is a deficient number, since it is larger than the sum of its proper divisors (1647383).

20560873 is a wasteful number, since it uses less digits than its factorization.

20560873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20560873 is about 4534.4098844282. The cubic root of 20560873 is about 273.9558109782.

The spelling of 20560873 in words is "twenty million, five hundred sixty thousand, eight hundred seventy-three".