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8038140 = 22351119641
BaseRepresentation
bin11110101010011011111100
3120010101020220
4132222123330
54024210030
6444141340
7125215545
oct36523374
916111226
108038140
1145a01a0
122837850
1318858c6
1410d34cc
15a8ba10
hex7aa6fc

8038140 has 96 divisors (see below), whose sum is σ = 25885440. Its totient is φ = 1843200.

The previous prime is 8038117. The next prime is 8038141. The reversal of 8038140 is 418308.

It is a super-3 number, since 3×80381403 (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 8038140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8038141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12220 + ... + 12860.

It is an arithmetic number, because the mean of its divisors is an integer number (269640).

Almost surely, 28038140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8038140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12942720).

8038140 is an abundant number, since it is smaller than the sum of its proper divisors (17847300).

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

8038140 is a wasteful number, since it uses less digits than its factorization.

8038140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 8038140 is about 2835.1613710687. The cubic root of 8038140 is about 200.3173295767.

The spelling of 8038140 in words is "eight million, thirty-eight thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 11 12 15 19 20 22 30 33 38 44 55 57 60 66 76 95 110 114 132 165 190 209 220 228 285 330 380 418 570 627 641 660 836 1045 1140 1254 1282 1923 2090 2508 2564 3135 3205 3846 4180 6270 6410 7051 7692 9615 12179 12540 12820 14102 19230 21153 24358 28204 35255 36537 38460 42306 48716 60895 70510 73074 84612 105765 121790 133969 141020 146148 182685 211530 243580 267938 365370 401907 423060 535876 669845 730740 803814 1339690 1607628 2009535 2679380 4019070 8038140