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80783075 = 528936307
BaseRepresentation
bin1001101000010…
…10011011100011
312122000012112202
410310022123203
5131140024300
612003243415
72000434112
oct464123343
9178005482
1080783075
114166657a
122307956b
1313975949
14aa2bc79
15715aad5
hex4d0a6e3

80783075 has 12 divisors (see below), whose sum is σ = 101299320. Its totient is φ = 63898560.

The previous prime is 80783071. The next prime is 80783089. The reversal of 80783075 is 57038708.

It is not a de Polignac number, because 80783075 - 22 = 80783071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80783071) 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 11 ways as a sum of consecutive naturals, for example, 15929 + ... + 20378.

It is an arithmetic number, because the mean of its divisors is an integer number (8441610).

Almost surely, 280783075 is an apocalyptic number.

80783075 is a deficient number, since it is larger than the sum of its proper divisors (20516245).

80783075 is a wasteful number, since it uses less digits than its factorization.

80783075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36406 (or 36401 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 80783075 is about 8987.9405316235. The cubic root of 80783075 is about 432.2882788786.

The spelling of 80783075 in words is "eighty million, seven hundred eighty-three thousand, seventy-five".

Divisors: 1 5 25 89 445 2225 36307 181535 907675 3231323 16156615 80783075