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3971538060 = 2235731330211
BaseRepresentation
bin1110110010111000…
…1101110010001100
3101020210011001000020
43230232031302030
531113203204220
61454031502140
7200263342110
oct35456156214
911223131006
103971538060
111758914366
1292a087950
134b3a67829
14299665740
15183a02040
hexecb8dc8c

3971538060 has 96 divisors (see below), whose sum is σ = 12749947392. Its totient is φ = 904849920.

The previous prime is 3971538037. The next prime is 3971538071. The reversal of 3971538060 is 608351793.

It is a super-2 number, since 2×39715380602 = 31546229124057127200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116355 + ... + 146565.

It is an arithmetic number, because the mean of its divisors is an integer number (132811952).

Almost surely, 23971538060 is an apocalyptic number.

3971538060 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3971538060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6374973696).

3971538060 is an abundant number, since it is smaller than the sum of its proper divisors (8778409332).

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

3971538060 is a wasteful number, since it uses less digits than its factorization.

3971538060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30543 (or 30541 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 3971538060 is about 63020.1401140937. The cubic root of 3971538060 is about 1583.6270436724.

The spelling of 3971538060 in words is "three billion, nine hundred seventy-one million, five hundred thirty-eight thousand, sixty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 313 420 626 939 1252 1565 1878 2191 3130 3756 4382 4695 6260 6573 8764 9390 10955 13146 18780 21910 26292 30211 32865 43820 60422 65730 90633 120844 131460 151055 181266 211477 302110 362532 422954 453165 604220 634431 845908 906330 1057385 1268862 1812660 2114770 2537724 3172155 4229540 6344310 9456043 12688620 18912086 28368129 37824172 47280215 56736258 66192301 94560430 113472516 132384602 141840645 189120860 198576903 264769204 283681290 330961505 397153806 567362580 661923010 794307612 992884515 1323846020 1985769030 3971538060