Search a number
-
+
20325030647 = 181151174317
BaseRepresentation
bin10010111011011101…
…110101101011110111
31221110111010112110212
4102323131311223313
5313111201440042
613200455540035
71316446624055
oct227335655367
957414115425
1020325030647
11868aa4a399
123b3298a61b
131bbbb2a86c
14dab5331d5
157de571482
hex4bb775af7

20325030647 has 8 divisors (see below), whose sum is σ = 20451124512. Its totient is φ = 20199088800.

The previous prime is 20325030641. The next prime is 20325030709. The reversal of 20325030647 is 74603052302.

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 20325030647 - 214 = 20325014263 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 (20325030641) 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, 236333 + ... + 310649.

It is an arithmetic number, because the mean of its divisors is an integer number (2556390564).

Almost surely, 220325030647 is an apocalyptic number.

20325030647 is a deficient number, since it is larger than the sum of its proper divisors (126093865).

20325030647 is a wasteful number, since it uses less digits than its factorization.

20325030647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76009.

The product of its (nonzero) digits is 30240, while the sum is 32.

Adding to 20325030647 its reverse (74603052302), we get a palindrome (94928082949).

The spelling of 20325030647 in words is "twenty billion, three hundred twenty-five million, thirty thousand, six hundred forty-seven".

Divisors: 1 181 1511 74317 273491 13451377 112292987 20325030647