Base | Representation |
---|---|
bin | 10010110001000011… |
… | …100000000001100100 |
3 | 1221000022110001012011 |
4 | 102301003200001210 |
5 | 312231442312040 |
6 | 13131300004004 |
7 | 1312226116546 |
oct | 226103400144 |
9 | 57008401164 |
10 | 20150354020 |
11 | 8600393245 |
12 | 3aa4390604 |
13 | 1b9189ba04 |
14 | d92263696 |
15 | 7ce06a3ea |
hex | 4b10e0064 |
20150354020 has 48 divisors (see below), whose sum is σ = 43701428736. Its totient is φ = 7796448000.
The previous prime is 20150354011. The next prime is 20150354033. The reversal of 20150354020 is 2045305102.
It is a junction number, because it is equal to n+sod(n) for n = 20150353982 and 20150354000.
It is an unprimeable number.
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 15 ways as a sum of consecutive naturals, for example, 1562800 + ... + 1575640.
It is an arithmetic number, because the mean of its divisors is an integer number (910446432).
Almost surely, 220150354020 is an apocalyptic number.
20150354020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
20150354020 is an abundant number, since it is smaller than the sum of its proper divisors (23551074716).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20150354020 is a wasteful number, since it uses less digits than its factorization.
20150354020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15412 (or 15410 counting only the distinct ones).
The product of its (nonzero) digits is 1200, while the sum is 22.
Adding to 20150354020 its reverse (2045305102), we get a palindrome (22195659122).
The spelling of 20150354020 in words is "twenty billion, one hundred fifty million, three hundred fifty-four thousand, twenty".
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