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29005990 = 25132389109
BaseRepresentation
bin110111010100…
…1100010100110
32000120122201221
41232221202212
524411142430
62513410554
7501355366
oct156514246
960518657
1029005990
11154116a2
129869a5a
136017710
143bd09a6
15282e57a
hex1ba98a6

29005990 has 64 divisors (see below), whose sum is σ = 59875200. Its totient is φ = 10036224.

The previous prime is 29005981. The next prime is 29006009. The reversal of 29005990 is 9950092.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 266056 + ... + 266164.

It is an arithmetic number, because the mean of its divisors is an integer number (935550).

Almost surely, 229005990 is an apocalyptic number.

29005990 is an abundant number, since it is smaller than the sum of its proper divisors (30869210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29005990 is a wasteful number, since it uses less digits than its factorization.

29005990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 29005990 is about 5385.7209359565. The cubic root of 29005990 is about 307.2528341903.

The spelling of 29005990 in words is "twenty-nine million, five thousand, nine hundred ninety".

Divisors: 1 2 5 10 13 23 26 46 65 89 109 115 130 178 218 230 299 445 545 598 890 1090 1157 1417 1495 2047 2314 2507 2834 2990 4094 5014 5785 7085 9701 10235 11570 12535 14170 19402 20470 25070 26611 32591 48505 53222 65182 97010 126113 133055 162955 223123 252226 266110 325910 446246 630565 1115615 1261130 2231230 2900599 5801198 14502995 29005990