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130782971 = 1121080851
BaseRepresentation
bin1111100101110…
…01011011111011
3100010002110111202
413302321123323
5231440023341
620551044415
73145431314
oct762713373
9303073452
10130782971
1167907200
123797070b
1321130c97
141352560b
15b73579b
hex7cb96fb

130782971 has 6 divisors (see below), whose sum is σ = 143753316. Its totient is φ = 118893500.

The previous prime is 130782941. The next prime is 130782973. The reversal of 130782971 is 179287031.

It is not a de Polignac number, because 130782971 - 210 = 130781947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130782973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 540305 + ... + 540546.

It is an arithmetic number, because the mean of its divisors is an integer number (23958886).

Almost surely, 2130782971 is an apocalyptic number.

130782971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

130782971 is a deficient number, since it is larger than the sum of its proper divisors (12970345).

130782971 is a wasteful number, since it uses less digits than its factorization.

130782971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080873 (or 1080862 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 130782971 is about 11436.0382563194. The cubic root of 130782971 is about 507.5946854321.

The spelling of 130782971 in words is "one hundred thirty million, seven hundred eighty-two thousand, nine hundred seventy-one".

Divisors: 1 11 121 1080851 11889361 130782971