| Base | Representation |
|---|---|
| bin | 10011001110110… |
| … | …00010011000000 |
| 3 | 102020112210210201 |
| 4 | 21213120103000 |
| 5 | 312244134310 |
| 6 | 24001334544 |
| 7 | 3666116050 |
| oct | 1147302300 |
| 9 | 366483721 |
| 10 | 161318080 |
| 11 | 83072730 |
| 12 | 46037454 |
| 13 | 275626b1 |
| 14 | 175d3560 |
| 15 | e267e3a |
| hex | 99d84c0 |
161318080 has 112 divisors (see below), whose sum is σ = 478999296. Its totient is φ = 50273280.
The previous prime is 161318071. The next prime is 161318089. The reversal of 161318080 is 80813161.
It is a happy number.
161318080 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (161318071) and next prime (161318089).
It is a tau number, because it is divible by the number of its divisors (112).
It is a Harshad number since it is a multiple of its sum of digits (28).
It is not an unprimeable number, because it can be changed into a prime (161318089) by changing a digit.
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 15 ways as a sum of consecutive naturals, for example, 21367 + ... + 27913.
Almost surely, 2161318080 is an apocalyptic number.
161318080 is a gapful number since it is divisible by the number (10) 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 161318080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239499648).
161318080 is an abundant number, since it is smaller than the sum of its proper divisors (317681216).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
161318080 is a wasteful number, since it uses less digits than its factorization.
161318080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6582 (or 6572 counting only the distinct ones).
The product of its (nonzero) digits is 1152, while the sum is 28.
The square root of 161318080 is about 12701.1054636988. The cubic root of 161318080 is about 544.3702064850.
The spelling of 161318080 in words is "one hundred sixty-one million, three hundred eighteen thousand, eighty".
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