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131827920 = 24357131599
BaseRepresentation
bin1111101101110…
…00100011010000
3100012001112220120
413312320203100
5232221443140
621025310240
73160342650
oct766704320
9305045816
10131827920
11684602a4
1238195380
13214087b3
1413718360
15b8901d0
hex7db88d0

131827920 has 160 divisors (see below), whose sum is σ = 471398400. Its totient is φ = 29852160.

The previous prime is 131827897. The next prime is 131827921. The reversal of 131827920 is 29728131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131827921) 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, 219781 + ... + 220379.

It is an arithmetic number, because the mean of its divisors is an integer number (2946240).

Almost surely, 2131827920 is an apocalyptic number.

131827920 is a gapful number since it is divisible by the number (10) 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 131827920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235699200).

131827920 is an abundant number, since it is smaller than the sum of its proper divisors (339570480).

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

131827920 is a wasteful number, since it uses less digits than its factorization.

131827920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 131827920 is about 11481.6340300499. The cubic root of 131827920 is about 508.9429857026.

The spelling of 131827920 in words is "one hundred thirty-one million, eight hundred twenty-seven thousand, nine hundred twenty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 131 140 168 210 240 262 280 336 393 420 524 560 599 655 786 840 917 1048 1198 1310 1572 1680 1797 1834 1965 2096 2396 2620 2751 2995 3144 3594 3668 3930 4193 4585 4792 5240 5502 5990 6288 7188 7336 7860 8386 8985 9170 9584 10480 11004 11980 12579 13755 14376 14672 15720 16772 17970 18340 20965 22008 23960 25158 27510 28752 31440 33544 35940 36680 41930 44016 47920 50316 55020 62895 67088 71880 73360 78469 83860 100632 110040 125790 143760 156938 167720 201264 220080 235407 251580 313876 335440 392345 470814 503160 549283 627752 784690 941628 1006320 1098566 1177035 1255504 1569380 1647849 1883256 2197132 2354070 2746415 3138760 3295698 3766512 4394264 4708140 5492830 6277520 6591396 8239245 8788528 9416280 10985660 13182792 16478490 18832560 21971320 26365584 32956980 43942640 65913960 131827920