Base | Representation |
---|---|
bin | 10010101111010000… |
… | …011110101100100011 |
3 | 1220221012201011102101 |
4 | 102233100132230203 |
5 | 312201232431034 |
6 | 13124301431231 |
7 | 1311411616051 |
oct | 225720365443 |
9 | 56835634371 |
10 | 20120202019 |
11 | 8595369635 |
12 | 3a9626b517 |
13 | 1b885727a8 |
14 | d8c2551d1 |
15 | 7cb5b1514 |
hex | 4af41eb23 |
20120202019 has 8 divisors (see below), whose sum is σ = 21180461840. Its totient is φ = 19060072416.
The previous prime is 20120201999. The next prime is 20120202031. The reversal of 20120202019 is 91020202102.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 20120202019 - 229 = 19583331107 is a prime.
It is a super-3 number, since 3×201202020193 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a Harshad number since it is a multiple of its sum of digits (19).
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 20120201987 and 20120202005.
It is not an unprimeable number, because it can be changed into a prime (20120232019) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592957 + ... + 625969.
It is an arithmetic number, because the mean of its divisors is an integer number (2647557730).
Almost surely, 220120202019 is an apocalyptic number.
20120202019 is a deficient number, since it is larger than the sum of its proper divisors (1060259821).
20120202019 is a wasteful number, since it uses less digits than its factorization.
20120202019 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 65109.
The product of its (nonzero) digits is 144, while the sum is 19.
The spelling of 20120202019 in words is "twenty billion, one hundred twenty million, two hundred two thousand, nineteen".
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