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80455305 = 35721747137
BaseRepresentation
bin1001100101110…
…10011010001001
312121101112221010
410302322122021
5131044032210
611552234133
71664600400
oct462723211
9177345833
1080455305
1141462297
1222b3b949
131388c6b8
14a984637
1570e3920
hex4cba689

80455305 has 96 divisors (see below), whose sum is σ = 163109376. Its totient is φ = 33632256.

The previous prime is 80455247. The next prime is 80455321. The reversal of 80455305 is 50355408.

It is not a de Polignac number, because 80455305 - 26 = 80455241 is a prime.

It is a super-2 number, since 2×804553052 = 12946112205286050, which contains 22 as substring.

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 95 ways as a sum of consecutive naturals, for example, 587197 + ... + 587333.

It is an arithmetic number, because the mean of its divisors is an integer number (1699056).

Almost surely, 280455305 is an apocalyptic number.

80455305 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80455305 is an abundant number, since it is smaller than the sum of its proper divisors (82654071).

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

80455305 is a wasteful number, since it uses less digits than its factorization.

80455305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 80455305 is about 8969.6881216684. The cubic root of 80455305 is about 431.7028295327.

The spelling of 80455305 in words is "eighty million, four hundred fifty-five thousand, three hundred five".

Divisors: 1 3 5 7 15 17 21 35 47 49 51 85 105 119 137 141 147 235 245 255 329 357 411 595 685 705 735 799 833 959 987 1645 1785 2055 2303 2329 2397 2499 2877 3995 4165 4795 4935 5593 6439 6713 6909 6987 11515 11645 11985 12495 14385 16303 16779 19317 20139 27965 32195 33565 34545 34935 39151 45073 48909 81515 83895 96585 100695 109463 114121 117453 135219 195755 225365 244545 315511 328389 342363 547315 570605 587265 676095 766241 946533 1577555 1641945 1711815 2298723 3831205 4732665 5363687 11493615 16091061 26818435 80455305