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180005060 = 2259000253
BaseRepresentation
bin10101011101010…
…10100011000100
3110112201012112002
422232222203010
5332040130220
625510044432
74314006044
oct1256524304
9415635462
10180005060
1192676514
1250349718
132b3a6291
1419c99724
1510c09c75
hexabaa8c4

180005060 has 12 divisors (see below), whose sum is σ = 378010668. Its totient is φ = 72002016.

The previous prime is 180005051. The next prime is 180005087. The reversal of 180005060 is 60500081.

It can be written as a sum of positive squares in 2 ways, for example, as 125126596 + 54878464 = 11186^2 + 7408^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 9000253 = 180005060 / (1 + 8 + 0 + 0 + 0 + 5 + 0 + 6 + 0).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4500107 + ... + 4500146.

It is an arithmetic number, because the mean of its divisors is an integer number (31500889).

Almost surely, 2180005060 is an apocalyptic number.

180005060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180005060 is an abundant number, since it is smaller than the sum of its proper divisors (198005608).

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

180005060 is a wasteful number, since it uses less digits than its factorization.

180005060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000262 (or 9000260 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 180005060 is about 13416.5964387396. The cubic root of 180005060 is about 564.6269079927.

The spelling of 180005060 in words is "one hundred eighty million, five thousand, sixty".

Divisors: 1 2 4 5 10 20 9000253 18000506 36001012 45001265 90002530 180005060