Search a number
-
+
80207105 = 51117109787
BaseRepresentation
bin1001100011111…
…01110100000001
312120220221110112
410301331310001
5131013111410
611543041105
71662514646
oct461756401
9176827415
1080207105
1141302870
1222a40195
1313803734
14a91bdcd
157095105
hex4c7dd01

80207105 has 32 divisors (see below), whose sum is σ = 112337280. Its totient is φ = 54328320.

The previous prime is 80207087. The next prime is 80207119. The reversal of 80207105 is 50170208.

It is not a de Polignac number, because 80207105 - 216 = 80141569 is a prime.

It is a Curzon 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, 101522 + ... + 102308.

It is an arithmetic number, because the mean of its divisors is an integer number (3510540).

Almost surely, 280207105 is an apocalyptic number.

80207105 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80207105 is a deficient number, since it is larger than the sum of its proper divisors (32130175).

80207105 is a wasteful number, since it uses less digits than its factorization.

80207105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 80207105 is about 8955.8419481364. The cubic root of 80207105 is about 431.2584460994.

The spelling of 80207105 in words is "eighty million, two hundred seven thousand, one hundred five".

Divisors: 1 5 11 17 55 85 109 187 545 787 935 1199 1853 3935 5995 8657 9265 13379 20383 43285 66895 85783 101915 147169 428915 735845 943613 1458311 4718065 7291555 16041421 80207105