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80285063 = 280128663
BaseRepresentation
bin1001100100100…
…00110110000111
312121001220101212
410302100312013
5131023110223
611544442035
71663261145
oct462206607
9177056355
1080285063
11413563a1
1222a7931b
1313830071
14a93c595
1570ad278
hex4c90d87

80285063 has 4 divisors (see below), whose sum is σ = 80316528. Its totient is φ = 80253600.

The previous prime is 80285059. The next prime is 80285077. The reversal of 80285063 is 36058208.

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

It is a cyclic number.

It is not a de Polignac number, because 80285063 - 22 = 80285059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80285003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11531 + ... + 17132.

It is an arithmetic number, because the mean of its divisors is an integer number (20079132).

Almost surely, 280285063 is an apocalyptic number.

80285063 is a deficient number, since it is larger than the sum of its proper divisors (31465).

80285063 is a wasteful number, since it uses less digits than its factorization.

80285063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31464.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 80285063 is about 8960.1932456839. The cubic root of 80285063 is about 431.3981226670.

The spelling of 80285063 in words is "eighty million, two hundred eighty-five thousand, sixty-three".

Divisors: 1 2801 28663 80285063