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180472868 = 22192374643
BaseRepresentation
bin10101100000111…
…00110000100100
3110120120222020022
422300130300210
5332200112433
625524054312
74320664652
oct1260346044
9416528208
10180472868
1192965a34
1250534398
132b50b1a4
1419d7bdd2
1510c9d698
hexac1cc24

180472868 has 12 divisors (see below), whose sum is σ = 332450160. Its totient is φ = 85487112.

The previous prime is 180472861. The next prime is 180472871. The reversal of 180472868 is 868274081.

It is not an unprimeable number, because it can be changed into a prime (180472861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187246 + ... + 1187397.

It is an arithmetic number, because the mean of its divisors is an integer number (27704180).

Almost surely, 2180472868 is an apocalyptic number.

It is an amenable number.

180472868 is a deficient number, since it is larger than the sum of its proper divisors (151977292).

180472868 is a wasteful number, since it uses less digits than its factorization.

180472868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374666 (or 2374664 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 180472868 is about 13434.0190561127. The cubic root of 180472868 is about 565.1156136917.

The spelling of 180472868 in words is "one hundred eighty million, four hundred seventy-two thousand, eight hundred sixty-eight".

Divisors: 1 2 4 19 38 76 2374643 4749286 9498572 45118217 90236434 180472868