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30915338130 = 23251512122717
BaseRepresentation
bin11100110010101100…
…101001111110010010
32221210112122220020100
4130302230221332102
51001303311310010
622111410553230
72143053016065
oct346254517622
987715586210
1030915338130
11121249a2126
125ba9598816
132bb8bcbcb1
1416d3c388dc
15c0e1852c0
hex732b29f92

30915338130 has 48 divisors (see below), whose sum is σ = 80388733464. Its totient is φ = 8243182080.

The previous prime is 30915338071. The next prime is 30915338143. The reversal of 30915338130 is 3183351903.

It is a happy number.

30915338130 is a `hidden beast` number, since 3 + 0 + 91 + 533 + 8 + 1 + 30 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18049653801 + 12865684329 = 134349^2 + 113427^2 .

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1349532 + ... + 1372248.

Almost surely, 230915338130 is an apocalyptic number.

30915338130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30915338130 is an abundant number, since it is smaller than the sum of its proper divisors (49473395334).

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

30915338130 is a wasteful number, since it uses less digits than its factorization.

30915338130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37851 (or 37848 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The spelling of 30915338130 in words is "thirty billion, nine hundred fifteen million, three hundred thirty-eight thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 15121 22717 30242 45363 45434 68151 75605 90726 113585 136089 136302 151210 204453 226815 227170 272178 340755 408906 453630 680445 681510 1022265 1360890 2044530 343503757 687007514 1030511271 1717518785 2061022542 3091533813 3435037570 5152556355 6183067626 10305112710 15457669065 30915338130