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80193049 = 113709673
BaseRepresentation
bin1001100011110…
…10011000011001
312120220020011221
410301322120121
5131012134144
611542452041
71662425656
oct461723031
9176806157
1080193049
11412a3252
1222a34021
13137ca211
14a916c2d
157090d84
hex4c7a619

80193049 has 4 divisors (see below), whose sum is σ = 80902836. Its totient is φ = 79483264.

The previous prime is 80193041. The next prime is 80193059. The reversal of 80193049 is 94039108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1338649 + 78854400 = 1157^2 + 8880^2 .

It is a cyclic number.

It is not a de Polignac number, because 80193049 - 23 = 80193041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80193041) 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 3 ways as a sum of consecutive naturals, for example, 354724 + ... + 354949.

It is an arithmetic number, because the mean of its divisors is an integer number (20225709).

Almost surely, 280193049 is an apocalyptic number.

It is an amenable number.

80193049 is a deficient number, since it is larger than the sum of its proper divisors (709787).

80193049 is a wasteful number, since it uses less digits than its factorization.

80193049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709786.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 80193049 is about 8955.0571745802. The cubic root of 80193049 is about 431.2332524757.

The spelling of 80193049 in words is "eighty million, one hundred ninety-three thousand, forty-nine".

Divisors: 1 113 709673 80193049