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180828227 = 732838753
BaseRepresentation
bin10101100011100…
…11100001000011
3110121021000200202
422301303201003
5332243000402
625535435415
74324004666
oct1261634103
9417230622
10180828227
1193088a18
1250685b6b
132b603b68
141a0316dd
1510d1db02
hexac73843

180828227 has 8 divisors (see below), whose sum is σ = 183974064. Its totient is φ = 177700608.

The previous prime is 180828191. The next prime is 180828229. The reversal of 180828227 is 722828081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-180828227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180828229) 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 7 ways as a sum of consecutive naturals, for example, 16283 + ... + 25035.

It is an arithmetic number, because the mean of its divisors is an integer number (22996758).

Almost surely, 2180828227 is an apocalyptic number.

180828227 is a deficient number, since it is larger than the sum of its proper divisors (3145837).

180828227 is an equidigital number, since it uses as much as digits as its factorization.

180828227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9109.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 180828227 is about 13447.2386384715. The cubic root of 180828227 is about 565.4862829941.

The spelling of 180828227 in words is "one hundred eighty million, eight hundred twenty-eight thousand, two hundred twenty-seven".

Divisors: 1 73 283 8753 20659 638969 2477099 180828227