Base | Representation |
---|---|
bin | 10100001001010… |
… | …11110001000000 |
3 | 102210000002102021 |
4 | 22010223301000 |
5 | 321231000000 |
6 | 24434131224 |
7 | 4121322241 |
oct | 1204536100 |
9 | 383002367 |
10 | 169000000 |
11 | 8743a224 |
12 | 48720b14 |
13 | 29022100 |
14 | 18632cc8 |
15 | ec8411a |
hex | a12bc40 |
169000000 has 147 divisors (see below), whose sum is σ = 453919971. Its totient is φ = 62400000.
The previous prime is 168999997. The next prime is 169000033. The reversal of 169000000 is 961.
The square root of 169000000 is 13000.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in 10 ways, for example, as 79281216 + 89718784 = 8904^2 + 9472^2 .
It is a super-2 number, since 2×1690000002 = 57122000000000000, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (16).
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 12999994 + ... + 13000006.
Almost surely, 2169000000 is an apocalyptic number.
169000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
169000000 is the 13000-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 169000000
169000000 is an abundant number, since it is smaller than the sum of its proper divisors (284919971).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
169000000 is an frugal number, since it uses more digits than its factorization.
169000000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 68 (or 20 counting only the distinct ones).
The product of its (nonzero) digits is 54, while the sum is 16.
The cubic root of 169000000 is about 552.8774813679.
Multiplying 169000000 by its sum of digits (16), we get a square (2704000000 = 520002).
169000000 divided by its sum of digits (16) gives a square (10562500 = 32502).
Adding to 169000000 its reverse (961), we get a palindrome (169000961).
Multiplying 169000000 by its reverse (961), we get a square (162409000000 = 4030002).
It can be divided in two parts, 16 and 9000000, that multiplied together give a square (144000000 = 120002).
The spelling of 169000000 in words is "one hundred sixty-nine million", and thus it is an aban number.
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