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387886122 = 232132397743
BaseRepresentation
bin10111000111101…
…010110000101010
31000000212122201200
4113013222300222
51243244323442
6102253425030
712416656221
oct2707526052
91000778650
10387886122
11189a51648
12a9a9b176
136248c820
143972dcb8
15240be34c
hex171eac2a

387886122 has 96 divisors (see below), whose sum is σ = 955438848. Its totient is φ = 112831488.

The previous prime is 387886111. The next prime is 387886123. The reversal of 387886122 is 221688783.

It is not an unprimeable number, because it can be changed into a prime (387886123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 521683 + ... + 522425.

It is an arithmetic number, because the mean of its divisors is an integer number (9952488).

Almost surely, 2387886122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387886122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477719424).

387886122 is an abundant number, since it is smaller than the sum of its proper divisors (567552726).

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

387886122 is a wasteful number, since it uses less digits than its factorization.

387886122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 881 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 387886122 is about 19694.8247516956. The cubic root of 387886122 is about 729.2919399516.

It can be divided in two parts, 3878 and 86122, that added together give a square (90000 = 3002).

The spelling of 387886122 in words is "three hundred eighty-seven million, eight hundred eighty-six thousand, one hundred twenty-two".

Divisors: 1 2 3 6 9 13 18 23 26 39 46 69 78 97 117 138 194 207 234 291 299 414 582 598 743 873 897 1261 1486 1746 1794 2229 2231 2522 2691 3783 4458 4462 5382 6687 6693 7566 9659 11349 13374 13386 17089 19318 20079 22698 28977 29003 34178 40158 51267 57954 58006 72071 86931 87009 102534 144142 153801 173862 174018 216213 222157 261027 307602 432426 444314 522054 648639 666471 936923 1297278 1332942 1657633 1873846 1999413 2810769 3315266 3998826 4972899 5621538 8432307 9945798 14918697 16864614 21549229 29837394 43098458 64647687 129295374 193943061 387886122