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130788530 = 2513078853
BaseRepresentation
bin1111100101110…
…10110010110010
3100010002202010122
413302322302302
5231440213110
620551130242
73145453445
oct762726262
9303082118
10130788530
11679103a4
1237973982
1321133682
141352765c
15b737255
hex7cbacb2

130788530 has 8 divisors (see below), whose sum is σ = 235419372. Its totient is φ = 52315408.

The previous prime is 130788527. The next prime is 130788563. The reversal of 130788530 is 35887031.

It can be written as a sum of positive squares in 2 ways, for example, as 130484929 + 303601 = 11423^2 + 551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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, 6539417 + ... + 6539436.

Almost surely, 2130788530 is an apocalyptic number.

130788530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130788530 is a deficient number, since it is larger than the sum of its proper divisors (104630842).

130788530 is a wasteful number, since it uses less digits than its factorization.

130788530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13078860.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 130788530 is about 11436.2813011923. The cubic root of 130788530 is about 507.6018771912.

The spelling of 130788530 in words is "one hundred thirty million, seven hundred eighty-eight thousand, five hundred thirty".

Divisors: 1 2 5 10 13078853 26157706 65394265 130788530