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80885281 = 671677229
BaseRepresentation
bin1001101001000…
…11011000100001
312122012101202011
410310203120201
5131201312111
612005352521
72001341101
oct464433041
9178171664
1080885281
1141726344
1223108741
13139b0319
14aa57201
15717b021
hex4d23621

80885281 has 8 divisors (see below), whose sum is σ = 82595520. Its totient is φ = 79189968.

The previous prime is 80885257. The next prime is 80885297. The reversal of 80885281 is 18258808.

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 80885281 - 25 = 80885249 is a prime.

It is a super-2 number, since 2×808852812 = 13084857364897922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80885221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7575 + ... + 14803.

It is an arithmetic number, because the mean of its divisors is an integer number (10324440).

Almost surely, 280885281 is an apocalyptic number.

It is an amenable number.

80885281 is a deficient number, since it is larger than the sum of its proper divisors (1710239).

80885281 is a wasteful number, since it uses less digits than its factorization.

80885281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7463.

The product of its (nonzero) digits is 40960, while the sum is 40.

The square root of 80885281 is about 8993.6244640301. The cubic root of 80885281 is about 432.4705110927.

The spelling of 80885281 in words is "eighty million, eight hundred eighty-five thousand, two hundred eighty-one".

Divisors: 1 67 167 7229 11189 484343 1207243 80885281