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80706385 = 5116313879
BaseRepresentation
bin1001100111101…
…11101101010001
312121212022100101
410303313231101
5131130101020
612001452401
71666664404
oct463675521
9177768311
1080706385
11416139a1
1223041101
1313949a76
14aa0bd3b
15714300a
hex4cf7b51

80706385 has 8 divisors (see below), whose sum is σ = 96937920. Its totient is φ = 64504944.

The previous prime is 80706347. The next prime is 80706389. The reversal of 80706385 is 58360708.

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 80706385 - 225 = 47151953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80706389) 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, 1125 + ... + 12754.

It is an arithmetic number, because the mean of its divisors is an integer number (12117240).

Almost surely, 280706385 is an apocalyptic number.

It is an amenable number.

80706385 is a deficient number, since it is larger than the sum of its proper divisors (16231535).

80706385 is a wasteful number, since it uses less digits than its factorization.

80706385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15047.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 80706385 is about 8983.6732465067. The cubic root of 80706385 is about 432.1514404610.

The spelling of 80706385 in words is "eighty million, seven hundred six thousand, three hundred eighty-five".

Divisors: 1 5 1163 5815 13879 69395 16141277 80706385