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130679985 = 3559147661
BaseRepresentation
bin1111100101000…
…00010010110001
3100002220020020110
413302200102301
5231423224420
620544531533
73144522132
oct762402261
9302806213
10130679985
1167846897
1237920ba9
13210c6147
14134d9c89
15b714ee0
hex7ca04b1

130679985 has 16 divisors (see below), whose sum is σ = 212633280. Its totient is φ = 68514240.

The previous prime is 130679981. The next prime is 130679987. The reversal of 130679985 is 589976031.

It is not a de Polignac number, because 130679985 - 22 = 130679981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130679981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72946 + ... + 74715.

It is an arithmetic number, because the mean of its divisors is an integer number (13289580).

Almost surely, 2130679985 is an apocalyptic number.

130679985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130679985 is a deficient number, since it is larger than the sum of its proper divisors (81953295).

130679985 is a wasteful number, since it uses less digits than its factorization.

130679985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147728.

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 130679985 is about 11431.5346738747. The cubic root of 130679985 is about 507.4614140707.

The spelling of 130679985 in words is "one hundred thirty million, six hundred seventy-nine thousand, nine hundred eighty-five".

Divisors: 1 3 5 15 59 177 295 885 147661 442983 738305 2214915 8711999 26135997 43559995 130679985