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131584080 = 24351732251
BaseRepresentation
bin1111101011111…
…01000001010000
3100011121011102110
413311331001100
5232141142310
621020145320
73155306025
oct765750120
9304534373
10131584080
1168304081
1238098240
1321351804
141369354c
15b842d20
hex7d7d050

131584080 has 80 divisors (see below), whose sum is σ = 431918784. Its totient is φ = 33024000.

The previous prime is 131584073. The next prime is 131584091. The reversal of 131584080 is 80485131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 12046 + ... + 20205.

Almost surely, 2131584080 is an apocalyptic number.

131584080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131584080 is an abundant number, since it is smaller than the sum of its proper divisors (300334704).

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

131584080 is a wasteful number, since it uses less digits than its factorization.

131584080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32284 (or 32278 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 131584080 is about 11471.0104175700. The cubic root of 131584080 is about 508.6289974569.

The spelling of 131584080 in words is "one hundred thirty-one million, five hundred eighty-four thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 34 40 48 51 60 68 80 85 102 120 136 170 204 240 255 272 340 408 510 680 816 1020 1360 2040 4080 32251 64502 96753 129004 161255 193506 258008 322510 387012 483765 516016 548267 645020 774024 967530 1096534 1290040 1548048 1644801 1935060 2193068 2580080 2741335 3289602 3870120 4386136 5482670 6579204 7740240 8224005 8772272 10965340 13158408 16448010 21930680 26316816 32896020 43861360 65792040 131584080