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80868823 = 723114999
BaseRepresentation
bin1001101000111…
…11010111010111
312122011120011121
410310133113113
5131200300243
612005144411
72001242110
oct464372727
9178146147
1080868823
1141714a42
12230bb107
13139a5999
14aa51207
1571761ed
hex4d1f5d7

80868823 has 8 divisors (see below), whose sum is σ = 92480000. Its totient is φ = 69272280.

The previous prime is 80868797. The next prime is 80868829. The reversal of 80868823 is 32886808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-80868823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80868823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80868829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13678 + ... + 18676.

It is an arithmetic number, because the mean of its divisors is an integer number (11560000).

Almost surely, 280868823 is an apocalyptic number.

80868823 is a deficient number, since it is larger than the sum of its proper divisors (11611177).

80868823 is a wasteful number, since it uses less digits than its factorization.

80868823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7317.

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 80868823 is about 8992.7094359820. The cubic root of 80868823 is about 432.4411770268.

The spelling of 80868823 in words is "eighty million, eight hundred sixty-eight thousand, eight hundred twenty-three".

Divisors: 1 7 2311 4999 16177 34993 11552689 80868823