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80814955 = 5132591621
BaseRepresentation
bin1001101000100…
…10001101101011
312122001211021111
410310102031223
5131142034310
612004051151
72000626054
oct464221553
9178054244
1080814955
1141688521
1223093ab7
1313987300
14aa3972b
15716528a
hex4d1236b

80814955 has 24 divisors (see below), whose sum is σ = 106857360. Its totient is φ = 58631040.

The previous prime is 80814953. The next prime is 80814971. The reversal of 80814955 is 55941808.

It is not a de Polignac number, because 80814955 - 21 = 80814953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80814953) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 49045 + ... + 50665.

It is an arithmetic number, because the mean of its divisors is an integer number (4452390).

Almost surely, 280814955 is an apocalyptic number.

80814955 is a deficient number, since it is larger than the sum of its proper divisors (26042405).

80814955 is a wasteful number, since it uses less digits than its factorization.

80814955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 80814955 is about 8989.7138441666. The cubic root of 80814955 is about 432.3451370669.

The spelling of 80814955 in words is "eighty million, eight hundred fourteen thousand, nine hundred fifty-five".

Divisors: 1 5 13 59 65 169 295 767 845 1621 3835 8105 9971 21073 49855 95639 105365 273949 478195 1243307 1369745 6216535 16162991 80814955