Search a number
-
+
19105093 = 717181887
BaseRepresentation
bin100100011100…
…0010101000101
31022221122021001
41020320111011
514342330333
61521253301
7321250660
oct110702505
938848231
1019105093
11a869a37
126494231
133c5bcb7
1427746d7
151a25b7d
hex1238545

19105093 has 16 divisors (see below), whose sum is σ = 23272704. Its totient is φ = 15310080.

The previous prime is 19105087. The next prime is 19105103. The reversal of 19105093 is 39050191.

It is a cyclic number.

It is not a de Polignac number, because 19105093 - 213 = 19096901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19105003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21096 + ... + 21982.

It is an arithmetic number, because the mean of its divisors is an integer number (1454544).

Almost surely, 219105093 is an apocalyptic number.

It is an amenable number.

19105093 is a deficient number, since it is larger than the sum of its proper divisors (4167611).

19105093 is a wasteful number, since it uses less digits than its factorization.

19105093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 19105093 is about 4370.9373136663. The cubic root of 19105093 is about 267.3312436050.

The spelling of 19105093 in words is "nineteen million, one hundred five thousand, ninety-three".

Divisors: 1 7 17 119 181 887 1267 3077 6209 15079 21539 105553 160547 1123829 2729299 19105093