20560953 has 8 divisors (see below), whose sum is σ = 31331008. Its totient is φ = 11749104.

The previous prime is 20560933. The next prime is 20560987. The reversal of 20560953 is 35906502.

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

It is not a de Polignac number, because 20560953 - 2⁵ = 20560921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20560953.

It is not an unprimeable number, because it can be changed into a prime (20560933) 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, 489526 + ... + 489567.

It is an arithmetic number, because the mean of its divisors is an integer number (3916376).

Almost surely, 2^20560953 is an apocalyptic number.

It is an amenable number.

20560953 is a deficient number, since it is larger than the sum of its proper divisors (10770055).

20560953 is an equidigital number, since it uses as much as digits as its factorization.

20560953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979103.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 20560953 is about 4534.4187058541. The cubic root of 20560953 is about 273.9561662879.

The spelling of 20560953 in words is "twenty million, five hundred sixty thousand, nine hundred fifty-three".