Base | Representation |
---|---|
bin | 1000010110001… |
… | …00111010101110 |
3 | 11212202000012220 |
4 | 10023010322232 |
5 | 120410400330 |
6 | 10540340210 |
7 | 1510045224 |
oct | 413047256 |
9 | 155660186 |
10 | 70012590 |
11 | 3657a54a |
12 | 1b544666 |
13 | 1167448b |
14 | 9426b14 |
15 | 622e710 |
hex | 42c4eae |
70012590 has 32 divisors (see below), whose sum is σ = 168514560. Its totient is φ = 18616224.
The previous prime is 70012577. The next prime is 70012597. The reversal of 70012590 is 9521007.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 70012590.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (70012597) 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, 7831 + ... + 14189.
It is an arithmetic number, because the mean of its divisors is an integer number (5266080).
Almost surely, 270012590 is an apocalyptic number.
70012590 is an abundant number, since it is smaller than the sum of its proper divisors (98501970).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
70012590 is a wasteful number, since it uses less digits than its factorization.
70012590 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6736.
The product of its (nonzero) digits is 630, while the sum is 24.
The square root of 70012590 is about 8367.3526279224. The cubic root of 70012590 is about 412.1532365863.
Adding to 70012590 its reverse (9521007), we get a palindrome (79533597).
It can be divided in two parts, 7001 and 2590, that added together give a triangular number (9591 = T138).
The spelling of 70012590 in words is "seventy million, twelve thousand, five hundred ninety".
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