Search a number
-
+
20859638 = 237281887
BaseRepresentation
bin100111110010…
…0101011110110
31110020210001012
41033210223312
520320002023
62023032222
7342206162
oct117445366
943223035
1020859638
1110858178
126b9b672
1344247a7
142aadca2
151c70978
hex13e4af6

20859638 has 8 divisors (see below), whose sum is σ = 32135232. Its totient is φ = 10147896.

The previous prime is 20859637. The next prime is 20859649. The reversal of 20859638 is 83695802.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20859595 and 20859604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20859637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140870 + ... + 141017.

It is an arithmetic number, because the mean of its divisors is an integer number (4016904).

Almost surely, 220859638 is an apocalyptic number.

20859638 is a deficient number, since it is larger than the sum of its proper divisors (11275594).

20859638 is a wasteful number, since it uses less digits than its factorization.

20859638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281926.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 20859638 is about 4567.2352687375. The cubic root of 20859638 is about 275.2763634955.

The spelling of 20859638 in words is "twenty million, eight hundred fifty-nine thousand, six hundred thirty-eight".

Divisors: 1 2 37 74 281887 563774 10429819 20859638