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19104189 = 313489851
BaseRepresentation
bin100100011100…
…0000110111101
31022221121000120
41020320012331
514342313224
61521245153
7321245226
oct110700675
938847016
1019104189
11a869295
1264937b9
133c5b770
14277424d
151a25779
hex12381bd

19104189 has 8 divisors (see below), whose sum is σ = 27431712. Its totient is φ = 11756400.

The previous prime is 19104181. The next prime is 19104203. The reversal of 19104189 is 98140191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19104189 - 23 = 19104181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19104181) 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, 244887 + ... + 244964.

It is an arithmetic number, because the mean of its divisors is an integer number (3428964).

Almost surely, 219104189 is an apocalyptic number.

It is an amenable number.

19104189 is a deficient number, since it is larger than the sum of its proper divisors (8327523).

19104189 is a wasteful number, since it uses less digits than its factorization.

19104189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489867.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 19104189 is about 4370.8339021290. The cubic root of 19104189 is about 267.3270270809.

The spelling of 19104189 in words is "nineteen million, one hundred four thousand, one hundred eighty-nine".

Divisors: 1 3 13 39 489851 1469553 6368063 19104189