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80193678 = 2333194027
BaseRepresentation
bin1001100011110…
…10100010001110
312120220021001020
410301322202032
5131012144203
611542455010
71662430545
oct461724216
9176807036
1080193678
11412a3774
1222a34466
13137ca5a6
14a91715c
157091153
hex4c7a88e

80193678 has 16 divisors (see below), whose sum is σ = 160475520. Its totient is φ = 26716536.

The previous prime is 80193677. The next prime is 80193691. The reversal of 80193678 is 87639108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80193677) 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, 17901 + ... + 21927.

It is an arithmetic number, because the mean of its divisors is an integer number (10029720).

Almost surely, 280193678 is an apocalyptic number.

80193678 is an abundant number, since it is smaller than the sum of its proper divisors (80281842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80193678 is a wasteful number, since it uses less digits than its factorization.

80193678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7351.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 80193678 is about 8955.0922943318. The cubic root of 80193678 is about 431.2343799425.

The spelling of 80193678 in words is "eighty million, one hundred ninety-three thousand, six hundred seventy-eight".

Divisors: 1 2 3 6 3319 4027 6638 8054 9957 12081 19914 24162 13365613 26731226 40096839 80193678