Search a number
-
+
20960827 = 97216091
BaseRepresentation
bin100111111110…
…1011000111011
31110102220211221
41033331120323
520331221302
62025132511
7343110166
oct117753073
943386757
1020960827
11109171a8
12702a137
13445b874
142ad8add
151c90937
hex13fd63b

20960827 has 4 divisors (see below), whose sum is σ = 21177016. Its totient is φ = 20744640.

The previous prime is 20960803. The next prime is 20960831. The reversal of 20960827 is 72806902.

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

It is a cyclic number.

It is not a de Polignac number, because 20960827 - 27 = 20960699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20960792 and 20960801.

It is not an unprimeable number, because it can be changed into a prime (20960887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107949 + ... + 108142.

It is an arithmetic number, because the mean of its divisors is an integer number (5294254).

Almost surely, 220960827 is an apocalyptic number.

20960827 is a deficient number, since it is larger than the sum of its proper divisors (216189).

20960827 is an equidigital number, since it uses as much as digits as its factorization.

20960827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216188.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20960827 is about 4578.2995751698. The cubic root of 20960827 is about 275.7207627063.

The spelling of 20960827 in words is "twenty million, nine hundred sixty thousand, eight hundred twenty-seven".

Divisors: 1 97 216091 20960827