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80315877 = 329923171
BaseRepresentation
bin1001100100110…
…00010111100101
312121010110200010
410302120113211
5131030102002
611545240433
71663450035
oct462302745
9177113603
1080315877
1141377564
1222a93119
13138410b5
14a9498c5
1570b746c
hex4c985e5

80315877 has 8 divisors (see below), whose sum is σ = 110780640. Its totient is φ = 51697520.

The previous prime is 80315867. The next prime is 80315897. The reversal of 80315877 is 77851308.

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 80315877 - 24 = 80315861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80315827) 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 7 ways as a sum of consecutive naturals, for example, 461499 + ... + 461672.

It is an arithmetic number, because the mean of its divisors is an integer number (13847580).

Almost surely, 280315877 is an apocalyptic number.

80315877 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

80315877 is a deficient number, since it is larger than the sum of its proper divisors (30464763).

80315877 is a wasteful number, since it uses less digits than its factorization.

80315877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923203.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 80315877 is about 8961.9125748916. The cubic root of 80315877 is about 431.4533068692.

The spelling of 80315877 in words is "eighty million, three hundred fifteen thousand, eight hundred seventy-seven".

Divisors: 1 3 29 87 923171 2769513 26771959 80315877