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380855 = 5192211
BaseRepresentation
bin1011100111110110111
3201100102202
41130332313
544141410
612055115
73144236
oct1347667
9640382
10380855
11240162
1216449b
13104477
149cb1d
1577ca5
hex5cfb7

380855 has 12 divisors (see below), whose sum is σ = 484632. Its totient is φ = 287280.

The previous prime is 380843. The next prime is 380867. The reversal of 380855 is 558083.

It is an interprime number because it is at equal distance from previous prime (380843) and next prime (380867).

It is not a de Polignac number, because 380855 - 24 = 380839 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

380855 is a modest number, since divided by 855 gives 380 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1700 + ... + 1910.

It is an arithmetic number, because the mean of its divisors is an integer number (40386).

2380855 is an apocalyptic number.

380855 is a deficient number, since it is larger than the sum of its proper divisors (103777).

380855 is a wasteful number, since it uses less digits than its factorization.

380855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 380855 is about 617.1345072186. The cubic root of 380855 is about 72.4858474158.

It can be divided in two parts, 380 and 855, that multiplied together give a square (324900 = 5702).

The spelling of 380855 in words is "three hundred eighty thousand, eight hundred fifty-five".

Divisors: 1 5 19 95 211 361 1055 1805 4009 20045 76171 380855