| Base | Representation |
|---|---|
| bin | 100100101000… |
| … | …0001111010110 |
| 3 | 1100010121121100 |
| 4 | 1021100033112 |
| 5 | 14403444110 |
| 6 | 1523330530 |
| 7 | 322136340 |
| oct | 111201726 |
| 9 | 40117540 |
| 10 | 19203030 |
| 11 | a926580 |
| 12 | 6520a46 |
| 13 | 3c94752 |
| 14 | 279c290 |
| 15 | 1a44bc0 |
| hex | 12503d6 |
19203030 has 192 divisors, whose sum is σ = 66313728. Its totient is φ = 3732480.
The previous prime is 19203007. The next prime is 19203049. The reversal of 19203030 is 3030291.
It is a super-2 number, since 2×192030302 = 737512722361800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (18).
19203030 is a modest number, since divided by 3030 gives 1920 as remainder.
It is a junction number, because it is equal to n+sod(n) for n = 19202994 and 19203012.
It is a congruent number.
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 95 ways as a sum of consecutive naturals, for example, 117729 + ... + 117891.
It is an arithmetic number, because the mean of its divisors is an integer number (345384).
Almost surely, 219203030 is an apocalyptic number.
19203030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 19203030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33156864).
19203030 is an abundant number, since it is smaller than the sum of its proper divisors (47110698).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19203030 is a wasteful number, since it uses less digits than its factorization.
19203030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 211 (or 208 counting only the distinct ones).
The product of its (nonzero) digits is 162, while the sum is 18.
The square root of 19203030 is about 4382.1261962659. The cubic root of 19203030 is about 267.7872652769.
It can be divided in two parts, 1920 and 3030, that added together give a triangular number (4950 = T99).
The spelling of 19203030 in words is "nineteen million, two hundred three thousand, thirty".
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