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80247115 = 5132234129
BaseRepresentation
bin1001100100001…
…11100101001011
312120222222100101
410302013211023
5131020401430
611543550231
71663042414
oct462074513
9176888311
1080247115
114132a933
1222a5b377
1313818a00
14a92c80b
1570a1dca
hex4c8794b

80247115 has 24 divisors (see below), whose sum is σ = 108833760. Its totient is φ = 56669184.

The previous prime is 80247107. The next prime is 80247143. The reversal of 80247115 is 51174208.

It is not a de Polignac number, because 80247115 - 23 = 80247107 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 17371 + ... + 21499.

It is an arithmetic number, because the mean of its divisors is an integer number (4534740).

Almost surely, 280247115 is an apocalyptic number.

80247115 is a deficient number, since it is larger than the sum of its proper divisors (28586645).

80247115 is a wasteful number, since it uses less digits than its factorization.

80247115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183 (or 4170 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 80247115 is about 8958.0754071396. The cubic root of 80247115 is about 431.3301429154.

The spelling of 80247115 in words is "eighty million, two hundred forty-seven thousand, one hundred fifteen".

Divisors: 1 5 13 23 65 115 169 299 845 1495 3887 4129 19435 20645 53677 94967 268385 474835 697801 1234571 3489005 6172855 16049423 80247115