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19105029 = 324349367
BaseRepresentation
bin100100011100…
…0010100000101
31022221122011200
41020320110011
514342330104
61521253113
7321250536
oct110702405
938848150
1019105029
11a869989
126494199
133c5bc68
14277468d
151a25b39
hex1238505

19105029 has 12 divisors (see below), whose sum is σ = 28238496. Its totient is φ = 12440232.

The previous prime is 19105027. The next prime is 19105033. The reversal of 19105029 is 92050191.

It is a happy number.

It is not a de Polignac number, because 19105029 - 21 = 19105027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19104993 and 19105011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19105027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24297 + ... + 25070.

It is an arithmetic number, because the mean of its divisors is an integer number (2353208).

Almost surely, 219105029 is an apocalyptic number.

It is an amenable number.

19105029 is a deficient number, since it is larger than the sum of its proper divisors (9133467).

19105029 is a wasteful number, since it uses less digits than its factorization.

19105029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49416 (or 49413 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 19105029 is about 4370.9299925760. The cubic root of 19105029 is about 267.3309450944.

The spelling of 19105029 in words is "nineteen million, one hundred five thousand, twenty-nine".

Divisors: 1 3 9 43 129 387 49367 148101 444303 2122781 6368343 19105029