| Base | Representation |
|---|---|
| bin | 10011001100100… |
| … | …11100100011000 |
| 3 | 102020000111122100 |
| 4 | 21212103210120 |
| 5 | 312211132233 |
| 6 | 23551323400 |
| 7 | 3663534240 |
| oct | 1146234430 |
| 9 | 366014570 |
| 10 | 161036568 |
| 11 | 829a0180 |
| 12 | 45b20560 |
| 13 | 27494514 |
| 14 | 1755cb20 |
| 15 | e20e813 |
| hex | 9993918 |
161036568 has 192 divisors, whose sum is σ = 561899520. Its totient is φ = 40435200.
The previous prime is 161036567. The next prime is 161036569. The reversal of 161036568 is 865630161.
It is a happy number.
161036568 is a `hidden beast` number, since 1 + 61 + 0 + 36 + 568 = 666.
It is an interprime number because it is at equal distance from previous prime (161036567) and next prime (161036569).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (161036567) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171396 + ... + 172332.
It is an arithmetic number, because the mean of its divisors is an integer number (2926560).
Almost surely, 2161036568 is an apocalyptic number.
161036568 is a gapful number since it is divisible by the number (18) 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 161036568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280949760).
161036568 is an abundant number, since it is smaller than the sum of its proper divisors (400862952).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
161036568 is a wasteful number, since it uses less digits than its factorization.
161036568 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 998 (or 991 counting only the distinct ones).
The product of its (nonzero) digits is 25920, while the sum is 36.
The square root of 161036568 is about 12690.0184397029. The cubic root of 161036568 is about 544.0533666648.
It can be divided in two parts, 161036 and 568, that added together give a square (161604 = 4022).
The spelling of 161036568 in words is "one hundred sixty-one million, thirty-six thousand, five hundred sixty-eight".
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