Search a number
-
+
20704341 = 37985921
BaseRepresentation
bin100111011111…
…0110001010101
31102221220000110
41032332301111
520300014331
62015433233
7340661340
oct116766125
942856013
1020704341
1110761529
126b25819
13439bbb8
142a6d457
151c3e946
hex13bec55

20704341 has 8 divisors (see below), whose sum is σ = 31549504. Its totient is φ = 11831040.

The previous prime is 20704309. The next prime is 20704379. The reversal of 20704341 is 14340702.

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

It is not a de Polignac number, because 20704341 - 25 = 20704309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 985921 = 20704341 / (2 + 0 + 7 + 0 + 4 + 3 + 4 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704141) 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, 492940 + ... + 492981.

It is an arithmetic number, because the mean of its divisors is an integer number (3943688).

Almost surely, 220704341 is an apocalyptic number.

20704341 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20704341 is a deficient number, since it is larger than the sum of its proper divisors (10845163).

20704341 is an equidigital number, since it uses as much as digits as its factorization.

20704341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985931.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20704341 is about 4550.2023031949. The cubic root of 20704341 is about 274.5915302211.

The spelling of 20704341 in words is "twenty million, seven hundred four thousand, three hundred forty-one".

Divisors: 1 3 7 21 985921 2957763 6901447 20704341