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38839498788 = 22397223149629
BaseRepresentation
bin100100001011000000…
…111011100000100100
310201020210100222010010
4210023000323200210
51114020402430123
625502001130220
72543323202226
oct441300734044
9121223328103
1038839498788
1115520980332
12763b329970
13387c80a75c
141c46400416
151024b9e993
hex90b03b824

38839498788 has 48 divisors (see below), whose sum is σ = 91970977280. Its totient is φ = 12755487744.

The previous prime is 38839498777. The next prime is 38839498823. The reversal of 38839498788 is 88789493883.

It is a happy number.

It is a super-2 number, since 2×388394987882 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 184758 + ... + 334386.

Almost surely, 238839498788 is an apocalyptic number.

It is an amenable number.

38839498788 is an abundant number, since it is smaller than the sum of its proper divisors (53131478492).

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

38839498788 is a wasteful number, since it uses less digits than its factorization.

38839498788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149956 (or 149954 counting only the distinct ones).

The product of its digits is 668860416, while the sum is 75.

The spelling of 38839498788 in words is "thirty-eight billion, eight hundred thirty-nine million, four hundred ninety-eight thousand, seven hundred eighty-eight".

Divisors: 1 2 3 4 6 12 97 194 223 291 388 446 582 669 892 1164 1338 2676 21631 43262 64893 86524 129786 149629 259572 299258 448887 598516 897774 1795548 14514013 29028026 33367267 43542039 58056052 66734534 87084078 100101801 133469068 174168156 200203602 400407204 3236624899 6473249798 9709874697 12946499596 19419749394 38839498788