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29145169 = 187915511
BaseRepresentation
bin110111100101…
…1100001010001
32000211201122201
41233023201101
524430121134
62520403201
7502505224
oct157134121
960751581
1029145169
11154a7219
129916501
136065b81
143c295bb
15285a914
hex1bcb851

29145169 has 4 divisors (see below), whose sum is σ = 29162560. Its totient is φ = 29127780.

The previous prime is 29145143. The next prime is 29145173. The reversal of 29145169 is 96154192.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29145169 - 27 = 29145041 is a prime.

It is a super-2 number, since 2×291451692 = 1698881752077122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29145119) 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 3 ways as a sum of consecutive naturals, for example, 5877 + ... + 9634.

It is an arithmetic number, because the mean of its divisors is an integer number (7290640).

Almost surely, 229145169 is an apocalyptic number.

It is an amenable number.

29145169 is a deficient number, since it is larger than the sum of its proper divisors (17391).

29145169 is a wasteful number, since it uses less digits than its factorization.

29145169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17390.

The product of its digits is 19440, while the sum is 37.

The square root of 29145169 is about 5398.6265846046. The cubic root of 29145169 is about 307.7434791384.

The spelling of 29145169 in words is "twenty-nine million, one hundred forty-five thousand, one hundred sixty-nine".

Divisors: 1 1879 15511 29145169