Base | Representation |
---|---|
bin | 101010010101100… |
… | …0101100100110000 |
3 | 10200000002000000100 |
4 | 1110223011210300 |
5 | 10402132044133 |
6 | 352543552400 |
7 | 50126512026 |
oct | 12453054460 |
9 | 3600060010 |
10 | 1420581168 |
11 | 669976726 |
12 | 3378bb700 |
13 | 198406596 |
14 | d694c716 |
15 | 84aace13 |
hex | 54ac5930 |
1420581168 has 120 divisors (see below), whose sum is σ = 4092294128. Its totient is φ = 459841536.
The previous prime is 1420581163. The next prime is 1420581179. The reversal of 1420581168 is 8611850241.
1420581168 is a `hidden beast` number, since 14 + 2 + 0 + 581 + 1 + 68 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (1420581163) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 703296 + ... + 705312.
Almost surely, 21420581168 is an apocalyptic number.
1420581168 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 1420581168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2046147064).
1420581168 is an abundant number, since it is smaller than the sum of its proper divisors (2671712960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1420581168 is a wasteful number, since it uses less digits than its factorization.
1420581168 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2171 (or 2162 counting only the distinct ones).
The product of its (nonzero) digits is 15360, while the sum is 36.
The square root of 1420581168 is about 37690.5978726791. The cubic root of 1420581168 is about 1124.1441834938.
The spelling of 1420581168 in words is "one billion, four hundred twenty million, five hundred eighty-one thousand, one hundred sixty-eight".
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