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380305 = 5233307
BaseRepresentation
bin1011100110110010001
3201022200101
41130312101
544132210
612052401
73142522
oct1346621
9638611
10380305
1123a802
12164101
13104143
149c849
1577a3a
hex5cd91

380305 has 8 divisors (see below), whose sum is σ = 476352. Its totient is φ = 290928.

The previous prime is 380299. The next prime is 380309. The reversal of 380305 is 503083.

Adding to 380305 its reverse (503083), we get a palindrome (883388).

It can be divided in two parts, 3 and 80305, that added together give a palindrome (80308).

380305 = 573 + 583.

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

It is a cyclic number.

It is not a de Polignac number, because 380305 - 217 = 249233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380309) 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, 1539 + ... + 1768.

It is an arithmetic number, because the mean of its divisors is an integer number (59544).

2380305 is an apocalyptic number.

It is an amenable number.

380305 is a deficient number, since it is larger than the sum of its proper divisors (96047).

380305 is a wasteful number, since it uses less digits than its factorization.

380305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 380305 is about 616.6887383437. The cubic root of 380305 is about 72.4509378724.

The spelling of 380305 in words is "three hundred eighty thousand, three hundred five".

Divisors: 1 5 23 115 3307 16535 76061 380305