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8020871168 = 21119792
BaseRepresentation
bin1110111100001010…
…01100100000000000
3202200222200110202112
413132011030200000
5112411320334133
63403523034452
7402523165022
oct73605144000
922628613675
108020871168
113446633252
12167a20ba28
139aa96cc1b
1456137c012
1531e26e648
hex1de14c800

8020871168 has 36 divisors (see below), whose sum is σ = 16045933995. Its totient is φ = 4008409088.

The previous prime is 8020871119. The next prime is 8020871179. The reversal of 8020871168 is 8611780208.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 4010435584 + 4010435584 = 63328^2 + 63328^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=63328.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4052003 + ... + 4053981.

Almost surely, 28020871168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8020871168

8020871168 is an abundant number, since it is smaller than the sum of its proper divisors (8025062827).

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

8020871168 is an frugal number, since it uses more digits than its factorization.

8020871168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3980 (or 1981 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 41.

The square root of 8020871168 is about 89559.3164779634. The cubic root of 8020871168 is about 2001.7377536688.

The spelling of 8020871168 in words is "eight billion, twenty million, eight hundred seventy-one thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 16 32 64 128 256 512 1024 1979 2048 3958 7916 15832 31664 63328 126656 253312 506624 1013248 2026496 3916441 4052992 7832882 15665764 31331528 62663056 125326112 250652224 501304448 1002608896 2005217792 4010435584 8020871168