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80953847 = 1317366307
BaseRepresentation
bin1001101001101…
…00000111110111
312122022212210122
410310310013313
5131211010342
612011042155
72002045022
oct464640767
9178285718
1080953847
1141772907
122314035b
1313a055b0
14aa741b9
1571914d2
hex4d341f7

80953847 has 8 divisors (see below), whose sum is σ = 92309616. Its totient is φ = 70330752.

The previous prime is 80953837. The next prime is 80953853. The reversal of 80953847 is 74835908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80953847 - 26 = 80953783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80953798 and 80953807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80953837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182933 + ... + 183374.

It is an arithmetic number, because the mean of its divisors is an integer number (11538702).

Almost surely, 280953847 is an apocalyptic number.

80953847 is a deficient number, since it is larger than the sum of its proper divisors (11355769).

80953847 is a wasteful number, since it uses less digits than its factorization.

80953847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366337.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 80953847 is about 8997.4355790970. The cubic root of 80953847 is about 432.5926775231.

The spelling of 80953847 in words is "eighty million, nine hundred fifty-three thousand, eight hundred forty-seven".

Divisors: 1 13 17 221 366307 4761991 6227219 80953847