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29808285 = 3513712153
BaseRepresentation
bin111000110110…
…1011010011101
32002002102021120
41301231122131
530112331120
62542521153
7511236423
oct161553235
962072246
1029808285
111590a451
129b961b9
136238950
143d5d113
15293c140
hex1c6d69d

29808285 has 32 divisors (see below), whose sum is σ = 52109568. Its totient is φ = 14461440.

The previous prime is 29808281. The next prime is 29808301. The reversal of 29808285 is 58280892.

It is not a de Polignac number, because 29808285 - 22 = 29808281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29808281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12769 + ... + 14921.

It is an arithmetic number, because the mean of its divisors is an integer number (1628424).

Almost surely, 229808285 is an apocalyptic number.

It is an amenable number.

29808285 is a deficient number, since it is larger than the sum of its proper divisors (22301283).

29808285 is a wasteful number, since it uses less digits than its factorization.

29808285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 29808285 is about 5459.6964201318. The cubic root of 29808285 is about 310.0599433164.

The spelling of 29808285 in words is "twenty-nine million, eight hundred eight thousand, two hundred eighty-five".

Divisors: 1 3 5 13 15 39 65 71 195 213 355 923 1065 2153 2769 4615 6459 10765 13845 27989 32295 83967 139945 152863 419835 458589 764315 1987219 2292945 5961657 9936095 29808285