Base | Representation |
---|---|
bin | 11110110100111010010000 |
3 | 120012120002210 |
4 | 132310322100 |
5 | 4032043130 |
6 | 445112120 |
7 | 125454612 |
oct | 36647220 |
9 | 16176083 |
10 | 8081040 |
11 | 461a450 |
12 | 2858640 |
13 | 189c2a6 |
14 | 1104db2 |
15 | a995b0 |
hex | 7b4e90 |
8081040 has 80 divisors (see below), whose sum is σ = 27337536. Its totient is φ = 1958400.
The previous prime is 8081011. The next prime is 8081041. The reversal of 8081040 is 401808.
8081040 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (80).
It is a junction number, because it is equal to n+sod(n) for n = 8080998 and 8081016.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8081041) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1110 + ... + 4170.
Almost surely, 28081040 is an apocalyptic number.
8081040 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 8081040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13668768).
8081040 is an abundant number, since it is smaller than the sum of its proper divisors (19256496).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8081040 is a wasteful number, since it uses less digits than its factorization.
8081040 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3088 (or 3082 counting only the distinct ones).
The product of its (nonzero) digits is 256, while the sum is 21.
The square root of 8081040 is about 2842.7170101859. The cubic root of 8081040 is about 200.6730657052.
Adding to 8081040 its reverse (401808), we get a palindrome (8482848).
The spelling of 8081040 in words is "eight million, eighty-one thousand, forty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.090 sec. • engine limits •