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29808289 = 79914297
BaseRepresentation
bin111000110110…
…1011010100001
32002002102021201
41301231122201
530112331124
62542521201
7511236430
oct161553241
962072251
1029808289
111590a455
129b96201
136238954
143d5d117
15293c144
hex1c6d6a1

29808289 has 8 divisors (see below), whose sum is σ = 34108928. Its totient is φ = 25518240.

The previous prime is 29808281. The next prime is 29808301. The reversal of 29808289 is 98280892.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29808289 - 23 = 29808281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29808281) 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 7 ways as a sum of consecutive naturals, for example, 4789 + ... + 9085.

It is an arithmetic number, because the mean of its divisors is an integer number (4263616).

Almost surely, 229808289 is an apocalyptic number.

It is an amenable number.

29808289 is a deficient number, since it is larger than the sum of its proper divisors (4300639).

29808289 is an equidigital number, since it uses as much as digits as its factorization.

29808289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5295.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 29808289 is about 5459.6967864525. The cubic root of 29808289 is about 310.0599571854.

The spelling of 29808289 in words is "twenty-nine million, eight hundred eight thousand, two hundred eighty-nine".

Divisors: 1 7 991 4297 6937 30079 4258327 29808289