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80220827 = 289727691
BaseRepresentation
bin1001100100000…
…01001010011011
312120221122021202
410302001022123
5131014031302
611543224415
71662602651
oct462011233
9176848252
1080220827
1141312105
1222a4810b
1313809a5b
14a922dd1
157099202
hex4c8129b

80220827 has 4 divisors (see below), whose sum is σ = 80251416. Its totient is φ = 80190240.

The previous prime is 80220823. The next prime is 80220859. The reversal of 80220827 is 72802208.

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 80220827 - 22 = 80220823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80220827.

It is not an unprimeable number, because it can be changed into a prime (80220821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10949 + ... + 16742.

It is an arithmetic number, because the mean of its divisors is an integer number (20062854).

Almost surely, 280220827 is an apocalyptic number.

80220827 is a deficient number, since it is larger than the sum of its proper divisors (30589).

80220827 is a wasteful number, since it uses less digits than its factorization.

80220827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30588.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 80220827 is about 8956.6080074993. The cubic root of 80220827 is about 431.2830382306.

The spelling of 80220827 in words is "eighty million, two hundred twenty thousand, eight hundred twenty-seven".

Divisors: 1 2897 27691 80220827