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70012130 = 257001213
BaseRepresentation
bin1000010110001…
…00110011100010
311212201222120212
410023010303202
5120410342010
610540334122
71510043666
oct413046342
9155658525
1070012130
113657a171
121b544342
13116741c6
1494268a6
15622e505
hex42c4ce2

70012130 has 8 divisors (see below), whose sum is σ = 126021852. Its totient is φ = 28004848.

The previous prime is 70012123. The next prime is 70012139. The reversal of 70012130 is 3121007.

It can be written as a sum of positive squares in 2 ways, for example, as 69939769 + 72361 = 8363^2 + 269^2 .

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

It is not an unprimeable number, because it can be changed into a prime (70012139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3500597 + ... + 3500616.

Almost surely, 270012130 is an apocalyptic number.

70012130 is a deficient number, since it is larger than the sum of its proper divisors (56009722).

70012130 is a wasteful number, since it uses less digits than its factorization.

70012130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001220.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 70012130 is about 8367.3251400911. The cubic root of 70012130 is about 412.1523339348.

Adding to 70012130 its reverse (3121007), we get a palindrome (73133137).

The spelling of 70012130 in words is "seventy million, twelve thousand, one hundred thirty".

Divisors: 1 2 5 10 7001213 14002426 35006065 70012130