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70286921208 = 2334723838117
BaseRepresentation
bin100000101110101101…
…1010100110111111000
320201102102020112210000
41001131123110313320
52122421422434313
652142300353000
75035526654430
oct1013533246770
9221372215700
1070286921208
1127899153239
1211756b45760
136821a1640a
14358ab832c0
151c658d9673
hex105d6d4df8

70286921208 has 320 divisors, whose sum is σ = 237632693760. Its totient is φ = 18975078144.

The previous prime is 70286921207. The next prime is 70286921219. The reversal of 70286921208 is 80212968207.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70286921207) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8655166 + ... + 8663282.

It is an arithmetic number, because the mean of its divisors is an integer number (742602168).

Almost surely, 270286921208 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 70286921208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118816346880).

70286921208 is an abundant number, since it is smaller than the sum of its proper divisors (167345772552).

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

70286921208 is a wasteful number, since it uses less digits than its factorization.

70286921208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8248 (or 8235 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 70286921208 in words is "seventy billion, two hundred eighty-six million, nine hundred twenty-one thousand, two hundred eight".