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380155 = 576031
BaseRepresentation
bin1011100110011111011
3201022110211
41130303323
544131110
612051551
73142216
oct1346373
9638424
10380155
1123a686
12163bb7
13104059
149c77d
157798a
hex5ccfb

380155 has 4 divisors (see below), whose sum is σ = 456192. Its totient is φ = 304120.

The previous prime is 380147. The next prime is 380179. The reversal of 380155 is 551083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551083 = 1342391.

It is not a de Polignac number, because 380155 - 23 = 380147 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38011 + ... + 38020.

It is an arithmetic number, because the mean of its divisors is an integer number (114048).

2380155 is an apocalyptic number.

380155 is a deficient number, since it is larger than the sum of its proper divisors (76037).

380155 is an equidigital number, since it uses as much as digits as its factorization.

380155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76036.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 380155 is about 616.5671090806. The cubic root of 380155 is about 72.4414112470.

It can be divided in two parts, 380 and 155, that added together give a palindrome (535).

The spelling of 380155 in words is "three hundred eighty thousand, one hundred fifty-five".

Divisors: 1 5 76031 380155