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8005381210 = 25800538121
BaseRepresentation
bin1110111010010100…
…00110110001011010
3202122220112111112101
413131022012301122
5112343334144320
63402211034014
7402244421551
oct73512066132
922586474471
108005381210
113438913432
121674b9b90a
139a76a8578
1455d2a8d98
1531cc0ec0a
hex1dd286c5a

8005381210 has 8 divisors (see below), whose sum is σ = 14409686196. Its totient is φ = 3202152480.

The previous prime is 8005381201. The next prime is 8005381211. The reversal of 8005381210 is 121835008.

It can be written as a sum of positive squares in 2 ways, for example, as 7871770729 + 133610481 = 88723^2 + 11559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×80053812102 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8005381211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400269051 + ... + 400269070.

Almost surely, 28005381210 is an apocalyptic number.

8005381210 is a deficient number, since it is larger than the sum of its proper divisors (6404304986).

8005381210 is a wasteful number, since it uses less digits than its factorization.

8005381210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800538128.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 8005381210 is about 89472.7959214420. The cubic root of 8005381210 is about 2000.4483336576.

The spelling of 8005381210 in words is "eight billion, five million, three hundred eighty-one thousand, two hundred ten".