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70115263 = 196175981
BaseRepresentation
bin1000010110111…
…01111110111111
311212221020001121
410023131332333
5120422142023
610542451411
71510653451
oct413357677
9155836047
1070115263
113663a6a9
121b593b67
13116ac12a
1494522d1
15624ed5d
hex42ddfbf

70115263 has 8 divisors (see below), whose sum is σ = 73937520. Its totient is φ = 66306240.

The previous prime is 70115239. The next prime is 70115267. The reversal of 70115263 is 36251107.

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

It is a cyclic number.

It is not a de Polignac number, because 70115263 - 217 = 69984191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70115267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8733 + ... + 14713.

It is an arithmetic number, because the mean of its divisors is an integer number (9242190).

Almost surely, 270115263 is an apocalyptic number.

70115263 is a deficient number, since it is larger than the sum of its proper divisors (3822257).

70115263 is a wasteful number, since it uses less digits than its factorization.

70115263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 70115263 is about 8373.4857138470. The cubic root of 70115263 is about 412.3546115115.

The spelling of 70115263 in words is "seventy million, one hundred fifteen thousand, two hundred sixty-three".

Divisors: 1 19 617 5981 11723 113639 3690277 70115263