Base | Representation |
---|---|
bin | 1001100100000… |
… | …11110000010101 |
3 | 12120222011212000 |
4 | 10302003300111 |
5 | 131014401240 |
6 | 11543345513 |
7 | 1662645630 |
oct | 462036025 |
9 | 176864760 |
10 | 80231445 |
11 | 4131a088 |
12 | 22a52299 |
13 | 13811838 |
14 | a926c17 |
15 | 709c430 |
hex | 4c83c15 |
80231445 has 64 divisors (see below), whose sum is σ = 165888000. Its totient is φ = 36030528.
The previous prime is 80231423. The next prime is 80231461. The reversal of 80231445 is 54413208.
It is not a de Polignac number, because 80231445 - 25 = 80231413 is a prime.
It is a super-3 number, since 3×802314453 (a number of 25 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
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 63 ways as a sum of consecutive naturals, for example, 55036 + ... + 56474.
It is an arithmetic number, because the mean of its divisors is an integer number (2592000).
Almost surely, 280231445 is an apocalyptic number.
It is an amenable number.
80231445 is an abundant number, since it is smaller than the sum of its proper divisors (85656555).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80231445 is a wasteful number, since it uses less digits than its factorization.
80231445 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1519 (or 1513 counting only the distinct ones).
The product of its (nonzero) digits is 3840, while the sum is 27.
The square root of 80231445 is about 8957.2007346045. The cubic root of 80231445 is about 431.3020655474.
The spelling of 80231445 in words is "eighty million, two hundred thirty-one thousand, four hundred forty-five".
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