Search a number
-
+
38455958491830 = 23251138844402517
BaseRepresentation
bin10001011111001101110011…
…01111101101001010110110
312001011100112212102110010200
420233212321233231022312
520020030300333214310
6213442231244101330
711046231333551505
oct1057467157551266
9161140485373120
1038455958491830
1111287098029850
124391032834846
13185c4c5a06069
1496d3c7a0483c
1546a4db1669c0
hex22f9b9bed2b6

38455958491830 has 48 divisors (see below), whose sum is σ = 109075082270544. Its totient is φ = 9322656603840.

The previous prime is 38455958491823. The next prime is 38455958491849. The reversal of 38455958491830 is 3819485955483.

38455958491830 is a `hidden beast` number, since 3 + 8 + 4 + 5 + 5 + 9 + 58 + 491 + 83 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19422200269 + ... + 19422202248.

It is an arithmetic number, because the mean of its divisors is an integer number (2272397547303).

Almost surely, 238455958491830 is an apocalyptic number.

38455958491830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38455958491830 is an abundant number, since it is smaller than the sum of its proper divisors (70619123778714).

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

38455958491830 is a wasteful number, since it uses less digits than its factorization.

38455958491830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38844402541 (or 38844402538 counting only the distinct ones).

The product of its (nonzero) digits is 746496000, while the sum is 72.

The spelling of 38455958491830 in words is "thirty-eight trillion, four hundred fifty-five billion, nine hundred fifty-eight million, four hundred ninety-one thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 30 33 45 55 66 90 99 110 165 198 330 495 990 38844402517 77688805034 116533207551 194222012585 233066415102 349599622653 388444025170 427288427687 582666037755 699199245306 854576855374 1165332075510 1281865283061 1747998113265 2136442138435 2563730566122 3495996226530 3845595849183 4272884276870 6409326415305 7691191698366 12818652830610 19227979245915 38455958491830