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131500460 = 22571372253
BaseRepresentation
bin1111101011010…
…00100110101100
3100011102220201102
413311220212230
5232131003320
621014302232
73154510160
oct765504654
9304386642
10131500460
1168257273
1238057978
1321322730
1413670ca0
15b828175
hex7d689ac

131500460 has 48 divisors (see below), whose sum is σ = 339882816. Its totient is φ = 41617152.

The previous prime is 131500427. The next prime is 131500507. The reversal of 131500460 is 64005131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34307 + ... + 37946.

It is an arithmetic number, because the mean of its divisors is an integer number (7080892).

Almost surely, 2131500460 is an apocalyptic number.

131500460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131500460 is an abundant number, since it is smaller than the sum of its proper divisors (208382356).

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

131500460 is a wasteful number, since it uses less digits than its factorization.

131500460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72282 (or 72280 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 131500460 is about 11467.3649981153. The cubic root of 131500460 is about 508.5212322182.

Adding to 131500460 its reverse (64005131), we get a palindrome (195505591).

The spelling of 131500460 in words is "one hundred thirty-one million, five hundred thousand, four hundred sixty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 182 260 364 455 910 1820 72253 144506 289012 361265 505771 722530 939289 1011542 1445060 1878578 2023084 2528855 3757156 4696445 5057710 6575023 9392890 10115420 13150046 18785780 26300092 32875115 65750230 131500460