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33105429 = 347219439
BaseRepresentation
bin111111001001…
…0011000010101
32022021221010000
41332102120111
531433333204
63141321513
7551251200
oct176223025
968257100
1033105429
1117761665
12b106299
136b21616
14457a937
152d8e039
hex1f92615

33105429 has 60 divisors (see below), whose sum is σ = 60693600. Its totient is φ = 17880912.

The previous prime is 33105389. The next prime is 33105461. The reversal of 33105429 is 92450133.

It is not a de Polignac number, because 33105429 - 212 = 33101333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33105469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 75192 + ... + 75630.

It is an arithmetic number, because the mean of its divisors is an integer number (1011560).

Almost surely, 233105429 is an apocalyptic number.

It is an amenable number.

33105429 is a deficient number, since it is larger than the sum of its proper divisors (27588171).

33105429 is a wasteful number, since it uses less digits than its factorization.

33105429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 33105429 is about 5753.7317455717. The cubic root of 33105429 is about 321.0946528452.

The spelling of 33105429 in words is "thirty-three million, one hundred five thousand, four hundred twenty-nine".

Divisors: 1 3 7 9 19 21 27 49 57 63 81 133 147 171 189 399 439 441 513 567 931 1197 1317 1323 1539 2793 3073 3591 3951 3969 8341 8379 9219 10773 11853 21511 25023 25137 27657 35559 58387 64533 75069 75411 82971 175161 193599 225207 248913 408709 525483 580797 675621 1226127 1576449 1742391 3678381 4729347 11035143 33105429