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80245605 = 3511598243
BaseRepresentation
bin1001100100001…
…11001101100101
312120222220021110
410302013031211
5131020324410
611543535233
71663035126
oct462071545
9176886243
1080245605
1141329790
1222a5a519
131381810b
14a92c04d
1570a1720
hex4c87365

80245605 has 32 divisors (see below), whose sum is σ = 142456320. Its totient is φ = 38242880.

The previous prime is 80245579. The next prime is 80245609. The reversal of 80245605 is 50654208.

It is not a de Polignac number, because 80245605 - 26 = 80245541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80245609) 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 31 ways as a sum of consecutive naturals, for example, 5614 + ... + 13856.

It is an arithmetic number, because the mean of its divisors is an integer number (4451760).

Almost surely, 280245605 is an apocalyptic number.

It is an amenable number.

80245605 is a deficient number, since it is larger than the sum of its proper divisors (62210715).

80245605 is a wasteful number, since it uses less digits than its factorization.

80245605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 80245605 is about 8957.9911252468. The cubic root of 80245605 is about 431.3274374699.

The spelling of 80245605 in words is "eighty million, two hundred forty-five thousand, six hundred five".

Divisors: 1 3 5 11 15 33 55 59 165 177 295 649 885 1947 3245 8243 9735 24729 41215 90673 123645 272019 453365 486337 1360095 1459011 2431685 5349707 7295055 16049121 26748535 80245605