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130375780 = 2256518789
BaseRepresentation
bin1111100010101…
…10000001100100
3100002022202221121
413301112001210
5231334011110
620534223324
73142114213
oct761260144
9302282847
10130375780
1167659287
12377b4b44
132101a842
141345b07a
15b6a4cda
hex7c56064

130375780 has 12 divisors (see below), whose sum is σ = 273789180. Its totient is φ = 52150304.

The previous prime is 130375757. The next prime is 130375823. The reversal of 130375780 is 87573031.

It can be written as a sum of positive squares in 2 ways, for example, as 79138816 + 51236964 = 8896^2 + 7158^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3259375 + ... + 3259414.

It is an arithmetic number, because the mean of its divisors is an integer number (22815765).

Almost surely, 2130375780 is an apocalyptic number.

130375780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130375780 is an abundant number, since it is smaller than the sum of its proper divisors (143413400).

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

130375780 is a wasteful number, since it uses less digits than its factorization.

130375780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6518798 (or 6518796 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 130375780 is about 11418.2214026529. The cubic root of 130375780 is about 507.0673413787.

The spelling of 130375780 in words is "one hundred thirty million, three hundred seventy-five thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 6518789 13037578 26075156 32593945 65187890 130375780