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180530874 = 23275713249
BaseRepresentation
bin10101100001010…
…10111010111010
3110120200220210200
422300222322322
5332203441444
625525223030
74321326036
oct1260527272
9416626720
10180530874
11929a5577
1250561a76
132b52b704
1419d951c6
1510cb0969
hexac2aeba

180530874 has 24 divisors (see below), whose sum is σ = 391696500. Its totient is φ = 60092928.

The previous prime is 180530873. The next prime is 180530921. The reversal of 180530874 is 478035081.

It can be written as a sum of positive squares in 2 ways, for example, as 179747649 + 783225 = 13407^2 + 885^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (180530873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7002 + ... + 20250.

Almost surely, 2180530874 is an apocalyptic number.

180530874 is an abundant number, since it is smaller than the sum of its proper divisors (211165626).

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

180530874 is a wasteful number, since it uses less digits than its factorization.

180530874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14014 (or 14011 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 180530874 is about 13436.1778047181. The cubic root of 180530874 is about 565.1761520343.

The spelling of 180530874 in words is "one hundred eighty million, five hundred thirty thousand, eight hundred seventy-four".

Divisors: 1 2 3 6 9 18 757 1514 2271 4542 6813 13249 13626 26498 39747 79494 119241 238482 10029493 20058986 30088479 60176958 90265437 180530874