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29105137 = 281103577
BaseRepresentation
bin110111100000…
…1101111110001
32000202200202001
41233001233301
524422331022
62515454001
7502250425
oct157015761
960680661
1029105137
111547a136
1298b7301
136050899
143c18b85
15284db27
hex1bc1bf1

29105137 has 4 divisors (see below), whose sum is σ = 29208996. Its totient is φ = 29001280.

The previous prime is 29105123. The next prime is 29105149. The reversal of 29105137 is 73150192.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22572001 + 6533136 = 4751^2 + 2556^2 .

It is a cyclic number.

It is not a de Polignac number, because 29105137 - 215 = 29072369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29105437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51508 + ... + 52069.

It is an arithmetic number, because the mean of its divisors is an integer number (7302249).

Almost surely, 229105137 is an apocalyptic number.

It is an amenable number.

29105137 is a deficient number, since it is larger than the sum of its proper divisors (103859).

29105137 is a wasteful number, since it uses less digits than its factorization.

29105137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103858.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 29105137 is about 5394.9177009478. The cubic root of 29105137 is about 307.6025154480.

The spelling of 29105137 in words is "twenty-nine million, one hundred five thousand, one hundred thirty-seven".

Divisors: 1 281 103577 29105137