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19193097 = 3711194373
BaseRepresentation
bin100100100110…
…1110100001001
31100010002222110
41021031310021
514403134342
61523212533
7322065360
oct111156411
940102873
1019193097
11a91a070
126517149
133c90081
1427987d7
151a41c9c
hex124dd09

19193097 has 32 divisors (see below), whose sum is σ = 33592320. Its totient is φ = 9443520.

The previous prime is 19193089. The next prime is 19193147. The reversal of 19193097 is 79039191.

It is not a de Polignac number, because 19193097 - 23 = 19193089 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (19193197) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2203 + ... + 6575.

It is an arithmetic number, because the mean of its divisors is an integer number (1049760).

Almost surely, 219193097 is an apocalyptic number.

It is an amenable number.

19193097 is a deficient number, since it is larger than the sum of its proper divisors (14399223).

19193097 is a wasteful number, since it uses less digits than its factorization.

19193097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4413.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 19193097 is about 4380.9926957255. The cubic root of 19193097 is about 267.7410852442.

The spelling of 19193097 in words is "nineteen million, one hundred ninety-three thousand, ninety-seven".

Divisors: 1 3 7 11 19 21 33 57 77 133 209 231 399 627 1463 4373 4389 13119 30611 48103 83087 91833 144309 249261 336721 581609 913957 1010163 1744827 2741871 6397699 19193097