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80561214 = 2324475623
BaseRepresentation
bin1001100110101…
…00010000111110
312121120221012200
410303110100332
5131110424324
611554412330
71665521226
oct463242076
9177527180
1080561214
1141524918
1222b910a6
13138c8976
14a9b1086
157114ec9
hex4cd443e

80561214 has 12 divisors (see below), whose sum is σ = 174549336. Its totient is φ = 26853732.

The previous prime is 80561213. The next prime is 80561233. The reversal of 80561214 is 41216508.

80561214 is a `hidden beast` number, since 80 + 561 + 21 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80561213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2237794 + ... + 2237829.

It is an arithmetic number, because the mean of its divisors is an integer number (14545778).

Almost surely, 280561214 is an apocalyptic number.

80561214 is an abundant number, since it is smaller than the sum of its proper divisors (93988122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80561214 is a wasteful number, since it uses less digits than its factorization.

80561214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475631 (or 4475628 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 80561214 is about 8975.5898970485. The cubic root of 80561214 is about 431.8921734490.

The spelling of 80561214 in words is "eighty million, five hundred sixty-one thousand, two hundred fourteen".

Divisors: 1 2 3 6 9 18 4475623 8951246 13426869 26853738 40280607 80561214