Base | Representation |
---|---|
bin | 100001000011010111… |
… | …1101110011011100000 |
3 | 20210012201122102210222 |
4 | 1002012233232123200 |
5 | 2130331403301444 |
6 | 52335142342212 |
7 | 5061645122000 |
oct | 1020657563340 |
9 | 223181572728 |
10 | 70980134624 |
11 | 28114487793 |
12 | 1190b12a968 |
13 | 690251a779 |
14 | 3614c72000 |
15 | 1ca66baeee |
hex | 1086bee6e0 |
70980134624 has 72 divisors (see below), whose sum is σ = 163028703600. Its totient is φ = 30408095424.
The previous prime is 70980134623. The next prime is 70980134683. The reversal of 70980134624 is 42643108907.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It is a super-2 number, since 2×709801346242 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (70980134623) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27910697 + ... + 27913239.
It is an arithmetic number, because the mean of its divisors is an integer number (2264287550).
Almost surely, 270980134624 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 70980134624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81514351800).
70980134624 is an abundant number, since it is smaller than the sum of its proper divisors (92048568976).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
70980134624 is an frugal number, since it uses more digits than its factorization.
70980134624 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5117 (or 2552 counting only the distinct ones).
The product of its (nonzero) digits is 290304, while the sum is 44.
The spelling of 70980134624 in words is "seventy billion, nine hundred eighty million, one hundred thirty-four thousand, six hundred twenty-four".
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