Search a number
-
+
380109 = 3126703
BaseRepresentation
bin1011100110011001101
3201022102010
41130303031
544130414
612051433
73142122
oct1346315
9638363
10380109
1123a644
12163b79
13104022
149c749
1577959
hex5cccd

380109 has 4 divisors (see below), whose sum is σ = 506816. Its totient is φ = 253404.

The previous prime is 380071. The next prime is 380117. The reversal of 380109 is 901083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 380109 - 28 = 379853 is a prime.

It is a D-number.

It is a Duffinian number.

380109 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380129) 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, 63349 + ... + 63354.

It is an arithmetic number, because the mean of its divisors is an integer number (126704).

2380109 is an apocalyptic number.

It is an amenable number.

380109 is a deficient number, since it is larger than the sum of its proper divisors (126707).

380109 is a wasteful number, since it uses less digits than its factorization.

380109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126706.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 380109 is about 616.5298046323. The cubic root of 380109 is about 72.4384892465.

The spelling of 380109 in words is "three hundred eighty thousand, one hundred nine".

Divisors: 1 3 126703 380109