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80847245 = 536234463
BaseRepresentation
bin1001101000110…
…10000110001101
312122010110120102
410310122012031
5131144102440
612004500445
72001122153
oct464320615
9178113512
1080847245
11416aa806
12230aa725
1313998c0b
14aa473d3
15716eb15
hex4d1a18d

80847245 has 8 divisors (see below), whose sum is σ = 97065216. Its totient is φ = 64645456.

The previous prime is 80847233. The next prime is 80847253. The reversal of 80847245 is 54274808.

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 80847245 - 216 = 80781709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80847199 and 80847208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15884 + ... + 20346.

It is an arithmetic number, because the mean of its divisors is an integer number (12133152).

Almost surely, 280847245 is an apocalyptic number.

It is an amenable number.

80847245 is a deficient number, since it is larger than the sum of its proper divisors (16217971).

80847245 is a wasteful number, since it uses less digits than its factorization.

80847245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8091.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 80847245 is about 8991.5096062897. The cubic root of 80847245 is about 432.4027112521.

The spelling of 80847245 in words is "eighty million, eight hundred forty-seven thousand, two hundred forty-five".

Divisors: 1 5 3623 4463 18115 22315 16169449 80847245