Base | Representation |
---|---|
bin | 1000011100101… |
… | …10010001000000 |
3 | 11221100120110210 |
4 | 10032112101000 |
5 | 121120320310 |
6 | 11010554120 |
7 | 1520246211 |
oct | 416262100 |
9 | 157316423 |
10 | 70870080 |
11 | 37005816 |
12 | 1b898940 |
13 | 118b4878 |
14 | 95ab408 |
15 | 634d820 |
hex | 4396440 |
70870080 has 56 divisors (see below), whose sum is σ = 225015552. Its totient is φ = 18898432.
The previous prime is 70870073. The next prime is 70870109. The reversal of 70870080 is 8007807.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (30).
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35952 + ... + 37871.
Almost surely, 270870080 is an apocalyptic number.
It is an amenable number.
70870080 is an abundant number, since it is smaller than the sum of its proper divisors (154145472).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
70870080 is a wasteful number, since it uses less digits than its factorization.
70870080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 73843 (or 73833 counting only the distinct ones).
The product of its (nonzero) digits is 3136, while the sum is 30.
The square root of 70870080 is about 8418.4369095456. The cubic root of 70870080 is about 413.8290502871.
Adding to 70870080 its reverse (8007807), we get a palindrome (78877887).
The spelling of 70870080 in words is "seventy million, eight hundred seventy thousand, eighty".
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