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80873099 = 285728307
BaseRepresentation
bin1001101001000…
…00011010001011
312122011210000222
410310200122023
5131200414344
612005220255
72001260426
oct464403213
9178153028
1080873099
114171817a
122310168b
13139a7908
14aa529bd
1571775ee
hex4d2068b

80873099 has 4 divisors (see below), whose sum is σ = 80904264. Its totient is φ = 80841936.

The previous prime is 80873081. The next prime is 80873113. The reversal of 80873099 is 99037808.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80873099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80873069) 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 3 ways as a sum of consecutive naturals, for example, 11297 + ... + 17010.

It is an arithmetic number, because the mean of its divisors is an integer number (20226066).

Almost surely, 280873099 is an apocalyptic number.

80873099 is a deficient number, since it is larger than the sum of its proper divisors (31165).

80873099 is a wasteful number, since it uses less digits than its factorization.

80873099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31164.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 80873099 is about 8992.9471809858. The cubic root of 80873099 is about 432.4487987769.

The spelling of 80873099 in words is "eighty million, eight hundred seventy-three thousand, ninety-nine".

Divisors: 1 2857 28307 80873099