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8521912352 = 25163192
BaseRepresentation
bin1111110111111001…
…00001000000100000
3210222220111000001102
413323330201000200
5114423102143402
63525342053532
7421116026342
oct77374410040
923886430042
108521912352
113683440978
121799b7a2a8
13a5a6cabb5
145abb25292
1534d241102
hex1fbf21020

8521912352 has 18 divisors (see below), whose sum is σ = 16778543103. Its totient is φ = 4260695072.

The previous prime is 8521912351. The next prime is 8521912379. The reversal of 8521912352 is 2532191258.

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., 4260956176 + 4260956176 = 65276^2 + 65276^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=65276.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8521912351) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 514049 + ... + 530367.

Almost surely, 28521912352 is an apocalyptic number.

It is an amenable number.

8521912352 is a deficient number, since it is larger than the sum of its proper divisors (8256630751).

8521912352 is an frugal number, since it uses more digits than its factorization.

8521912352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32648 (or 16321 counting only the distinct ones).

The product of its digits is 43200, while the sum is 38.

The square root of 8521912352 is about 92314.2044974662. The cubic root of 8521912352 is about 2042.5797454266.

The spelling of 8521912352 in words is "eight billion, five hundred twenty-one million, nine hundred twelve thousand, three hundred fifty-two".

Divisors: 1 2 4 8 16 32 16319 32638 65276 130552 261104 522208 266309761 532619522 1065239044 2130478088 4260956176 8521912352