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80808863 = 717914407
BaseRepresentation
bin1001101000100…
…00101110011111
312122001111220212
410310100232133
5131141340423
612004003035
72000602232
oct464205637
9178044825
1080808863
1141683993
122309047b
13139845c5
14aa37419
157163578
hex4d10b9f

80808863 has 8 divisors (see below), whose sum is σ = 82990080. Its totient is φ = 78656760.

The previous prime is 80808859. The next prime is 80808869. The reversal of 80808863 is 36880808.

It is a happy number.

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 80808863 - 22 = 80808859 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 80808863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80808869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1595 + ... + 12812.

It is an arithmetic number, because the mean of its divisors is an integer number (10373760).

Almost surely, 280808863 is an apocalyptic number.

80808863 is a deficient number, since it is larger than the sum of its proper divisors (2181217).

80808863 is a wasteful number, since it uses less digits than its factorization.

80808863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14557.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 80808863 is about 8989.3750060836. The cubic root of 80808863 is about 432.3342731009.

The spelling of 80808863 in words is "eighty million, eight hundred eight thousand, eight hundred sixty-three".

Divisors: 1 71 79 5609 14407 1022897 1138153 80808863