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180860242 = 2611482461
BaseRepresentation
bin10101100011110…
…11010101010010
3110121022122121111
422301323111102
5332300011432
625540243534
74324200223
oct1261732522
9417278544
10180860242
11930aaa82
12506a05aa
132b6155c4
141a03d24a
1510d28347
hexac7b552

180860242 has 8 divisors (see below), whose sum is σ = 275737932. Its totient is φ = 88947600.

The previous prime is 180860219. The next prime is 180860243. The reversal of 180860242 is 242068081.

It can be written as a sum of positive squares in 2 ways, for example, as 152547201 + 28313041 = 12351^2 + 5321^2 .

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

It is not an unprimeable number, because it can be changed into a prime (180860243) 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, 741109 + ... + 741352.

Almost surely, 2180860242 is an apocalyptic number.

180860242 is a deficient number, since it is larger than the sum of its proper divisors (94877690).

180860242 is a wasteful number, since it uses less digits than its factorization.

180860242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482524.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 180860242 is about 13448.4289788808. The cubic root of 180860242 is about 565.5196534757.

The spelling of 180860242 in words is "one hundred eighty million, eight hundred sixty thousand, two hundred forty-two".

Divisors: 1 2 61 122 1482461 2964922 90430121 180860242