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70118280 = 233253161103
BaseRepresentation
bin1000010110111…
…10101110001000
311212221101012100
410023132232020
5120422241110
610542513400
71510665321
oct413365610
9155841170
1070118280
11366419a1
121b595860
13116b060b
149453448
156250bc0
hex42deb88

70118280 has 192 divisors, whose sum is σ = 241413120. Its totient is φ = 17625600.

The previous prime is 70118273. The next prime is 70118281. The reversal of 70118280 is 8281107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70118281) 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 47 ways as a sum of consecutive naturals, for example, 680709 + ... + 680811.

It is an arithmetic number, because the mean of its divisors is an integer number (1257360).

Almost surely, 270118280 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 70118280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120706560).

70118280 is an abundant number, since it is smaller than the sum of its proper divisors (171294840).

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

70118280 is a wasteful number, since it uses less digits than its factorization.

70118280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 70118280 is about 8373.6658638854. The cubic root of 70118280 is about 412.3605258492.

Adding to 70118280 its reverse (8281107), we get a palindrome (78399387).

It can be divided in two parts, 701 and 18280, that added together give a palindrome (18981).

The spelling of 70118280 in words is "seventy million, one hundred eighteen thousand, two hundred eighty".