Base | Representation |
---|---|
bin | 10101011101010… |
… | …01100111000011 |
3 | 110112201000020211 |
4 | 22232221213003 |
5 | 332040014334 |
6 | 25510014551 |
7 | 4313661616 |
oct | 1256514703 |
9 | 415630224 |
10 | 180001219 |
11 | 92673642 |
12 | 50347457 |
13 | 2b3a45c8 |
14 | 19c9817d |
15 | 10c08a64 |
hex | aba99c3 |
180001219 has 8 divisors (see below), whose sum is σ = 190712448. Its totient is φ = 169303680.
The previous prime is 180001109. The next prime is 180001229. The reversal of 180001219 is 912100081.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 180001219 - 213 = 179993027 is a prime.
It is a super-2 number, since 2×1800012192 = 64800877682971922, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 180001219.
It is not an unprimeable number, because it can be changed into a prime (180001229) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38254 + ... + 42700.
It is an arithmetic number, because the mean of its divisors is an integer number (23839056).
Almost surely, 2180001219 is an apocalyptic number.
180001219 is a deficient number, since it is larger than the sum of its proper divisors (10711229).
180001219 is a wasteful number, since it uses less digits than its factorization.
180001219 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6845.
The product of its (nonzero) digits is 144, while the sum is 22.
The square root of 180001219 is about 13416.4532943696. The cubic root of 180001219 is about 564.6228919068.
It can be divided in two parts, 18000 and 1219, that multiplied together give a triangular number (21942000 = T6624).
The spelling of 180001219 in words is "one hundred eighty million, one thousand, two hundred nineteen".
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