| Base | Representation |
|---|---|
| bin | 10011001101011… |
| … | …01000010100000 |
| 3 | 102020012210202100 |
| 4 | 21212231002200 |
| 5 | 312223002041 |
| 6 | 23553450400 |
| 7 | 3664450350 |
| oct | 1146550240 |
| 9 | 366183670 |
| 10 | 161140896 |
| 11 | 82a615a4 |
| 12 | 45b70a00 |
| 13 | 274ccb57 |
| 14 | 17588b60 |
| 15 | e2306b6 |
| hex | 99ad0a0 |
161140896 has 144 divisors (see below), whose sum is σ = 531969984. Its totient is φ = 45315072.
The previous prime is 161140891. The next prime is 161140933. The reversal of 161140896 is 698041161.
It is a happy number.
161140896 is a `hidden beast` number, since 161 + 1 + 408 + 96 = 666.
It is a tau number, because it is divible by the number of its divisors (144).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a self number, because there is not a number n which added to its sum of digits gives 161140896.
It is not an unprimeable number, because it can be changed into a prime (161140891) 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 23 ways as a sum of consecutive naturals, for example, 134476 + ... + 135668.
It is an arithmetic number, because the mean of its divisors is an integer number (3694236).
Almost surely, 2161140896 is an apocalyptic number.
161140896 is a gapful number since it is divisible by the number (16) 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 161140896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265984992).
161140896 is an abundant number, since it is smaller than the sum of its proper divisors (370829088).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
161140896 is a wasteful number, since it uses less digits than its factorization.
161140896 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1283 (or 1272 counting only the distinct ones).
The product of its (nonzero) digits is 10368, while the sum is 36.
The square root of 161140896 is about 12694.1284064720. The cubic root of 161140896 is about 544.1708301440.
The spelling of 161140896 in words is "one hundred sixty-one million, one hundred forty thousand, eight hundred ninety-six".
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