Search a number
-
+
20050264630 = 25113121532731
BaseRepresentation
bin10010101011000101…
…101100001000110110
31220202100002222100201
4102223011230020312
5312030331432010
613113322431114
71306602303004
oct225305541066
956670088321
1020050264630
118559940640
123a7696249a
131b76c26616
14d82c4ba74
157c539923a
hex4ab16c236

20050264630 has 64 divisors (see below), whose sum is σ = 40675239936. Its totient is φ = 7049952000.

The previous prime is 20050264579. The next prime is 20050264649. The reversal of 20050264630 is 3646205002.

It is a happy number.

It is a super-2 number, since 2×200502646302 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7340365 + ... + 7343095.

It is an arithmetic number, because the mean of its divisors is an integer number (635550624).

Almost surely, 220050264630 is an apocalyptic number.

20050264630 is an abundant number, since it is smaller than the sum of its proper divisors (20624975306).

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

20050264630 is a wasteful number, since it uses less digits than its factorization.

20050264630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4933.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20050264630 its reverse (3646205002), we get a palindrome (23696469632).

The spelling of 20050264630 in words is "twenty billion, fifty million, two hundred sixty-four thousand, six hundred thirty".

Divisors: 1 2 5 10 11 22 31 55 62 110 155 310 341 682 1705 2153 2731 3410 4306 5462 10765 13655 21530 23683 27310 30041 47366 60082 66743 84661 118415 133486 150205 169322 236830 300410 333715 423305 667430 734173 846610 931271 1468346 1862542 3670865 4656355 5879843 7341730 9312710 11759686 29399215 58798430 64678273 129356546 182275133 323391365 364550266 646782730 911375665 1822751330 2005026463 4010052926 10025132315 20050264630