Search a number
-
+
131246880 = 25351272153
BaseRepresentation
bin1111101001010…
…10101100100000
3100010222000212120
413310222230200
5232044400010
621005024240
73152402652
oct764525440
9303860776
10131246880
11680a37a6
1237b55080
132126419b
14136066d2
15b7c7e70
hex7d2ab20

131246880 has 96 divisors (see below), whose sum is σ = 416876544. Its totient is φ = 34707456.

The previous prime is 131246861. The next prime is 131246909. The reversal of 131246880 is 88642131.

It is a tau number, because it is divible by the number of its divisors (96).

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, 59884 + ... + 62036.

It is an arithmetic number, because the mean of its divisors is an integer number (4342464).

Almost surely, 2131246880 is an apocalyptic number.

131246880 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 131246880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208438272).

131246880 is an abundant number, since it is smaller than the sum of its proper divisors (285629664).

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

131246880 is a wasteful number, since it uses less digits than its factorization.

131246880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298 (or 2290 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 131246880 is about 11456.3030686169. The cubic root of 131246880 is about 508.1941515100.

The spelling of 131246880 in words is "one hundred thirty-one million, two hundred forty-six thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 127 160 240 254 381 480 508 635 762 1016 1270 1524 1905 2032 2153 2540 3048 3810 4064 4306 5080 6096 6459 7620 8612 10160 10765 12192 12918 15240 17224 20320 21530 25836 30480 32295 34448 43060 51672 60960 64590 68896 86120 103344 129180 172240 206688 258360 273431 344480 516720 546862 820293 1033440 1093724 1367155 1640586 2187448 2734310 3281172 4101465 4374896 5468620 6562344 8202930 8749792 10937240 13124688 16405860 21874480 26249376 32811720 43748960 65623440 131246880