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80255987 = 728574013
BaseRepresentation
bin1001100100010…
…01101111110011
312121000102111222
410302021233303
5131021142422
611544055255
71663110320
oct462115763
9177012458
1080255987
1141336569
1222a6452b
131381ca66
14a931b47
1570a4842
hex4c89bf3

80255987 has 8 divisors (see below), whose sum is σ = 91776096. Its totient is φ = 68749632.

The previous prime is 80255977. The next prime is 80256013. The reversal of 80255987 is 78955208.

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

It is not a de Polignac number, because 80255987 - 210 = 80254963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80255977) 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, 17993 + ... + 22005.

It is an arithmetic number, because the mean of its divisors is an integer number (11472012).

Almost surely, 280255987 is an apocalyptic number.

80255987 is a deficient number, since it is larger than the sum of its proper divisors (11520109).

80255987 is a wasteful number, since it uses less digits than its factorization.

80255987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6877.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 80255987 is about 8958.5705891063. The cubic root of 80255987 is about 431.3460380663.

The spelling of 80255987 in words is "eighty million, two hundred fifty-five thousand, nine hundred eighty-seven".

Divisors: 1 7 2857 4013 19999 28091 11465141 80255987