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8120970080 = 25550756063
BaseRepresentation
bin1111001000000110…
…00010101101100000
3202221222001000122122
413210003002231200
5113112432020310
63421500323412
7405150051416
oct74403025540
922858030578
108120970080
113498092023
1216a7843568
139c5619752
145707972b6
15327e43555
hex1e40c2b60

8120970080 has 24 divisors (see below), whose sum is σ = 19185792192. Its totient is φ = 3248387968.

The previous prime is 8120970073. The next prime is 8120970083. The reversal of 8120970080 is 800790218.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8120970080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120970083) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 25377872 + ... + 25378191.

It is an arithmetic number, because the mean of its divisors is an integer number (799408008).

Almost surely, 28120970080 is an apocalyptic number.

8120970080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8120970080 is an abundant number, since it is smaller than the sum of its proper divisors (11064822112).

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

8120970080 is a wasteful number, since it uses less digits than its factorization.

8120970080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50756078 (or 50756070 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 8120970080 is about 90116.4251399266. The cubic root of 8120970080 is about 2010.0304509301.

The spelling of 8120970080 in words is "eight billion, one hundred twenty million, nine hundred seventy thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 50756063 101512126 203024252 253780315 406048504 507560630 812097008 1015121260 1624194016 2030242520 4060485040 8120970080