Search a number
-
+
20030710 = 257240879
BaseRepresentation
bin100110001101…
…0010011110110
31101200122222011
41030122103312
520111440320
61553154434
7332154400
oct114322366
941618864
1020030710
1110341407
12685ba1a
1341c43bb
142935b70
151b5a05a
hex131a4f6

20030710 has 24 divisors (see below), whose sum is σ = 41942880. Its totient is φ = 6867504.

The previous prime is 20030683. The next prime is 20030711. The reversal of 20030710 is 1703002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030711) 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 11 ways as a sum of consecutive naturals, for example, 19950 + ... + 20929.

It is an arithmetic number, because the mean of its divisors is an integer number (1747620).

Almost surely, 220030710 is an apocalyptic number.

20030710 is an abundant number, since it is smaller than the sum of its proper divisors (21912170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20030710 is a wasteful number, since it uses less digits than its factorization.

20030710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40900 (or 40893 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 20030710 is about 4475.5681203619. The cubic root of 20030710 is about 271.5806235513.

Adding to 20030710 its reverse (1703002), we get a palindrome (21733712).

The spelling of 20030710 in words is "twenty million, thirty thousand, seven hundred ten".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 40879 81758 204395 286153 408790 572306 1430765 2003071 2861530 4006142 10015355 20030710