Base | Representation |
---|---|
bin | 1001100010111… |
… | …00001010100000 |
3 | 12120122221101220 |
4 | 10301130022200 |
5 | 130444204110 |
6 | 11540055040 |
7 | 1661402064 |
oct | 461341240 |
9 | 176587356 |
10 | 80069280 |
11 | 41219265 |
12 | 22994480 |
13 | 13785a95 |
14 | a8c3aa4 |
15 | 7069370 |
hex | 4c5c2a0 |
80069280 has 96 divisors (see below), whose sum is σ = 260402688. Its totient is φ = 20659200.
The previous prime is 80069257. The next prime is 80069293. The reversal of 80069280 is 8296008.
It is a tau number, because it is divible by the number of its divisors (96).
It is a super-2 number, since 2×800692802 = 12822179199436800, which contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12190 + ... + 17570.
It is an arithmetic number, because the mean of its divisors is an integer number (2712528).
Almost surely, 280069280 is an apocalyptic number.
80069280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 80069280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130201344).
80069280 is an abundant number, since it is smaller than the sum of its proper divisors (180333408).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80069280 is a wasteful number, since it uses less digits than its factorization.
80069280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5430 (or 5422 counting only the distinct ones).
The product of its (nonzero) digits is 6912, while the sum is 33.
The square root of 80069280 is about 8948.1439416228. The cubic root of 80069280 is about 431.0112848146.
The spelling of 80069280 in words is "eighty million, sixty-nine thousand, two hundred eighty".
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