Base | Representation |
---|---|
bin | 1001101001110… |
… | …00000101100000 |
3 | 12122100201001212 |
4 | 10310320011200 |
5 | 131212020310 |
6 | 12011245252 |
7 | 2002143242 |
oct | 464700540 |
9 | 178321055 |
10 | 80970080 |
11 | 41784024 |
12 | 23149828 |
13 | 13a0cab9 |
14 | aa7a092 |
15 | 7196205 |
hex | 4d38160 |
80970080 has 48 divisors (see below), whose sum is σ = 195973344. Its totient is φ = 31595520.
The previous prime is 80970053. The next prime is 80970083. The reversal of 80970080 is 8007908.
It is a Harshad number since it is a multiple of its sum of digits (32).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80970083) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389 + ... + 12731.
It is an arithmetic number, because the mean of its divisors is an integer number (4082778).
Almost surely, 280970080 is an apocalyptic number.
80970080 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 80970080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97986672).
80970080 is an abundant number, since it is smaller than the sum of its proper divisors (115003264).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80970080 is a wasteful number, since it uses less digits than its factorization.
80970080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12399 (or 12391 counting only the distinct ones).
The product of its (nonzero) digits is 4032, while the sum is 32.
The square root of 80970080 is about 8998.3376242504. The cubic root of 80970080 is about 432.6215903250.
Adding to 80970080 its reverse (8007908), we get a palindrome (88977988).
The spelling of 80970080 in words is "eighty million, nine hundred seventy thousand, eighty".
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