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29006305 = 525722573
BaseRepresentation
bin110111010100…
…1100111100001
32000120200011121
41232221213201
524411200210
62513412241
7501356326
oct156514741
960520147
1029006305
1115411959
12986a081
1360178c3
143bd0b4d
15282e6da
hex1ba99e1

29006305 has 8 divisors (see below), whose sum is σ = 34944552. Its totient is φ = 23113728.

The previous prime is 29006273. The next prime is 29006321. The reversal of 29006305 is 50360092.

It can be written as a sum of positive squares in 4 ways, for example, as 3936256 + 25070049 = 1984^2 + 5007^2 .

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 29006305 - 25 = 29006273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29006305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10002 + ... + 12571.

It is an arithmetic number, because the mean of its divisors is an integer number (4368069).

Almost surely, 229006305 is an apocalyptic number.

It is an amenable number.

29006305 is a deficient number, since it is larger than the sum of its proper divisors (5938247).

29006305 is a wasteful number, since it uses less digits than its factorization.

29006305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22835.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 29006305 is about 5385.7501798728. The cubic root of 29006305 is about 307.2539464237.

Adding to 29006305 its reverse (50360092), we get a palindrome (79366397).

The spelling of 29006305 in words is "twenty-nine million, six thousand, three hundred five".

Divisors: 1 5 257 1285 22573 112865 5801261 29006305