Base | Representation |
---|---|
bin | 100101101010… |
… | …0100101000000 |
3 | 1101011011011120 |
4 | 1023110211000 |
5 | 20023320323 |
6 | 1543112240 |
7 | 326554566 |
oct | 113244500 |
9 | 41134146 |
10 | 19745088 |
11 | 10166860 |
12 | 6742680 |
13 | 41243ac |
14 | 289da36 |
15 | 1b005e3 |
hex | 12d4940 |
19745088 has 56 divisors (see below), whose sum is σ = 56997600. Its totient is φ = 5982720.
The previous prime is 19745083. The next prime is 19745111. The reversal of 19745088 is 88054791.
It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (19745083) 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, 2563 + ... + 6786.
Almost surely, 219745088 is an apocalyptic number.
It is an amenable number.
19745088 is an abundant number, since it is smaller than the sum of its proper divisors (37252512).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19745088 is a wasteful number, since it uses less digits than its factorization.
19745088 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9375 (or 9365 counting only the distinct ones).
The product of its (nonzero) digits is 80640, while the sum is 42.
The square root of 19745088 is about 4443.5445311148. The cubic root of 19745088 is about 270.2835977630.
The spelling of 19745088 in words is "nineteen million, seven hundred forty-five thousand, eighty-eight".
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