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130991180 = 22513747807
BaseRepresentation
bin1111100111011…
…00010001001100
3100010111001010012
413303230101030
5232013204210
620555332352
73150256325
oct763542114
9303431105
10130991180
1167a39681
1237a510b8
13211a4998
141357b44c
15b777305
hex7cec44c

130991180 has 24 divisors (see below), whose sum is σ = 277095168. Its totient is φ = 52012928.

The previous prime is 130991167. The next prime is 130991251. The reversal of 130991180 is 81199031.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21164 + ... + 26643.

It is an arithmetic number, because the mean of its divisors is an integer number (11545632).

Almost surely, 2130991180 is an apocalyptic number.

130991180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130991180 is an abundant number, since it is smaller than the sum of its proper divisors (146103988).

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

130991180 is a wasteful number, since it uses less digits than its factorization.

130991180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47953 (or 47951 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 130991180 is about 11445.1378322849. The cubic root of 130991180 is about 507.8639094399.

The spelling of 130991180 in words is "one hundred thirty million, nine hundred ninety-one thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 137 274 548 685 1370 2740 47807 95614 191228 239035 478070 956140 6549559 13099118 26198236 32747795 65495590 130991180