Base | Representation |
---|---|
bin | 100101011100… |
… | …0101100101010 |
3 | 1100221100112000 |
4 | 1022320230222 |
5 | 20011142030 |
6 | 1540431430 |
7 | 325600626 |
oct | 112705452 |
9 | 40840460 |
10 | 19630890 |
11 | 10098a84 |
12 | 66a8576 |
13 | 40b4416 |
14 | 2870186 |
15 | 1acb860 |
hex | 12b8b2a |
19630890 has 32 divisors (see below), whose sum is σ = 52349760. Its totient is φ = 5234832.
The previous prime is 19630889. The next prime is 19630909. The reversal of 19630890 is 9803691.
19630890 is a `hidden beast` number, since 19 + 630 + 8 + 9 + 0 = 666.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36084 + ... + 36623.
It is an arithmetic number, because the mean of its divisors is an integer number (1635930).
Almost surely, 219630890 is an apocalyptic number.
19630890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
19630890 is an abundant number, since it is smaller than the sum of its proper divisors (32718870).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19630890 is a wasteful number, since it uses less digits than its factorization.
19630890 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 72723 (or 72717 counting only the distinct ones).
The product of its (nonzero) digits is 11664, while the sum is 36.
The square root of 19630890 is about 4430.6760206542. The cubic root of 19630890 is about 269.7615178135.
The spelling of 19630890 in words is "nineteen million, six hundred thirty thousand, eight hundred ninety".
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