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131590144 = 211767137
BaseRepresentation
bin1111101011111…
…10100000000000
3100011121110202001
413311332200000
5232141341034
621020233344
73155332510
oct765764000
9304543661
10131590144
1168308694
123809b854
13213544ba
1413695840
15b844a14
hex7d7e800

131590144 has 96 divisors (see below), whose sum is σ = 307419840. Its totient is φ = 55148544.

The previous prime is 131590127. The next prime is 131590157. The reversal of 131590144 is 441095131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 960444 + ... + 960580.

It is an arithmetic number, because the mean of its divisors is an integer number (3202290).

Almost surely, 2131590144 is an apocalyptic number.

131590144 is a gapful number since it is divisible by the number (14) 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 131590144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153709920).

131590144 is an abundant number, since it is smaller than the sum of its proper divisors (175829696).

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

131590144 is an equidigital number, since it uses as much as digits as its factorization.

131590144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 131590144 is about 11471.2747330016. The cubic root of 131590144 is about 508.6368106586.

The spelling of 131590144 in words is "one hundred thirty-one million, five hundred ninety thousand, one hundred forty-four".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 67 112 128 134 137 224 256 268 274 448 469 512 536 548 896 938 959 1024 1072 1096 1792 1876 1918 2048 2144 2192 3584 3752 3836 4288 4384 7168 7504 7672 8576 8768 9179 14336 15008 15344 17152 17536 18358 30016 30688 34304 35072 36716 60032 61376 64253 68608 70144 73432 120064 122752 128506 137216 140288 146864 240128 245504 257012 280576 293728 480256 491008 514024 587456 960512 982016 1028048 1174912 1964032 2056096 2349824 4112192 4699648 8224384 9399296 16448768 18798592 32897536 65795072 131590144