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70112913 = 31317105751
BaseRepresentation
bin1000010110111…
…01011010010001
311212221002211120
410023131122101
5120422103123
610542432453
71510643553
oct413353221
9155832746
1070112913
1136638962
121b592729
13116ab040
1494514d3
15624e2e3
hex42dd691

70112913 has 16 divisors (see below), whose sum is σ = 106598016. Its totient is φ = 40608000.

The previous prime is 70112893. The next prime is 70112929. The reversal of 70112913 is 31921107.

It is not a de Polignac number, because 70112913 - 25 = 70112881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70112953) 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 15 ways as a sum of consecutive naturals, for example, 52213 + ... + 53538.

It is an arithmetic number, because the mean of its divisors is an integer number (6662376).

Almost surely, 270112913 is an apocalyptic number.

It is an amenable number.

70112913 is a deficient number, since it is larger than the sum of its proper divisors (36485103).

70112913 is a wasteful number, since it uses less digits than its factorization.

70112913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105784.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 70112913 is about 8373.3453887917. The cubic root of 70112913 is about 412.3500046013.

The spelling of 70112913 in words is "seventy million, one hundred twelve thousand, nine hundred thirteen".

Divisors: 1 3 13 17 39 51 221 663 105751 317253 1374763 1797767 4124289 5393301 23370971 70112913