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10805305 = 57308723
BaseRepresentation
bin101001001110…
…000000111001
3202022222002111
4221032000321
510231232210
61023332321
7160562230
oct51160071
922288074
1010805305
116110205
1237510a1
132314294
141613b17
15e3688a
hexa4e039

10805305 has 8 divisors (see below), whose sum is σ = 14818752. Its totient is φ = 7409328.

The previous prime is 10805303. The next prime is 10805309. The reversal of 10805305 is 50350801.

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 10805305 - 21 = 10805303 is a prime.

It is a super-2 number, since 2×108053052 = 233509232286050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10805303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154327 + ... + 154396.

It is an arithmetic number, because the mean of its divisors is an integer number (1852344).

Almost surely, 210805305 is an apocalyptic number.

It is an amenable number.

10805305 is a deficient number, since it is larger than the sum of its proper divisors (4013447).

10805305 is an equidigital number, since it uses as much as digits as its factorization.

10805305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308735.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 10805305 is about 3287.1423759856. The cubic root of 10805305 is about 221.0780761925.

The spelling of 10805305 in words is "ten million, eight hundred five thousand, three hundred five".

Divisors: 1 5 7 35 308723 1543615 2161061 10805305