Search a number
-
+
20068973 = 75126723
BaseRepresentation
bin100110010001…
…1101001101101
31101202121110022
41030203221231
520114201343
61554051525
7332404061
oct114435155
941677408
1020068973
1110368131
126879ba5
134208942
142945aa1
151b66568
hex1323a6d

20068973 has 4 divisors (see below), whose sum is σ = 20096448. Its totient is φ = 20041500.

The previous prime is 20068969. The next prime is 20068987. The reversal of 20068973 is 37986002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37986002 = 218993001.

It is a cyclic number.

It is not a de Polignac number, because 20068973 - 22 = 20068969 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 (20068933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12611 + ... + 14112.

It is an arithmetic number, because the mean of its divisors is an integer number (5024112).

Almost surely, 220068973 is an apocalyptic number.

It is an amenable number.

20068973 is a deficient number, since it is larger than the sum of its proper divisors (27475).

20068973 is an equidigital number, since it uses as much as digits as its factorization.

20068973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27474.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20068973 is about 4479.8407337761. The cubic root of 20068973 is about 271.7534395214.

The spelling of 20068973 in words is "twenty million, sixty-eight thousand, nine hundred seventy-three".

Divisors: 1 751 26723 20068973