Base | Representation |
---|---|
bin | 10010111010000010… |
… | …011000001001001100 |
3 | 1221101211000102102220 |
4 | 102322002120021030 |
5 | 313034032221130 |
6 | 13154242015340 |
7 | 1316036054634 |
oct | 227202301114 |
9 | 57354012386 |
10 | 20301054540 |
11 | 8678463828 |
12 | 3b26947550 |
13 | 1bb6b84710 |
14 | da82916c4 |
15 | 7dc3d7410 |
hex | 4ba09824c |
20301054540 has 192 divisors, whose sum is σ = 62067962880. Its totient is φ = 4928025600.
The previous prime is 20301054539. The next prime is 20301054559. The reversal of 20301054540 is 4545010302.
It is a super-2 number, since 2×203010545402 (a number of 21 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 20301054540.
It is an unprimeable number.
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 63 ways as a sum of consecutive naturals, for example, 34584127 + ... + 34584713.
It is an arithmetic number, because the mean of its divisors is an integer number (323270640).
Almost surely, 220301054540 is an apocalyptic number.
20301054540 is a gapful number since it is divisible by the number (20) 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 20301054540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31033981440).
20301054540 is an abundant number, since it is smaller than the sum of its proper divisors (41766908340).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20301054540 is a wasteful number, since it uses less digits than its factorization.
20301054540 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1152 (or 1150 counting only the distinct ones).
The product of its (nonzero) digits is 2400, while the sum is 24.
Adding to 20301054540 its reverse (4545010302), we get a palindrome (24846064842).
The spelling of 20301054540 in words is "twenty billion, three hundred one million, fifty-four thousand, five hundred forty".
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