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8130707688 = 2332557132491
BaseRepresentation
bin1111001001010000…
…01100000011101000
3202222122100202010210
413210220030003220
5113122430121223
63422445141120
7405325606065
oct74450140350
922878322123
108130707688
1134a2633034
1216aab5a7a0
139c7648a4c
14571badc6c
15328c18893
hex1e4a0c0e8

8130707688 has 32 divisors (see below), whose sum is σ = 20334872160. Its totient is φ = 2709155520.

The previous prime is 8130707671. The next prime is 8130707693. The reversal of 8130707688 is 8867070318.

It is a super-2 number, since 2×81307076882 (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4878 + ... + 127613.

It is an arithmetic number, because the mean of its divisors is an integer number (635464755).

Almost surely, 28130707688 is an apocalyptic number.

It is an amenable number.

8130707688 is an abundant number, since it is smaller than the sum of its proper divisors (12204164472).

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

8130707688 is a wasteful number, since it uses less digits than its factorization.

8130707688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135057 (or 135053 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 8130707688 is about 90170.4368848238. The cubic root of 8130707688 is about 2010.8335188120.

The spelling of 8130707688 in words is "eight billion, one hundred thirty million, seven hundred seven thousand, six hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 24 2557 5114 7671 10228 15342 20456 30684 61368 132491 264982 397473 529964 794946 1059928 1589892 3179784 338779487 677558974 1016338461 1355117948 2032676922 2710235896 4065353844 8130707688