Search a number
-
+
380885 = 5174481
BaseRepresentation
bin1011100111111010101
3201100110212
41130333111
544142020
612055205
73144311
oct1347725
9640425
10380885
1124018a
12164505
1310449b
149cb41
1577cc5
hex5cfd5

380885 has 8 divisors (see below), whose sum is σ = 484056. Its totient is φ = 286720.

The previous prime is 380881. The next prime is 380909. The reversal of 380885 is 588083.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 128881 + 252004 = 359^2 + 502^2 .

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

It is not a de Polignac number, because 380885 - 22 = 380881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 380885.

It is not an unprimeable number, because it can be changed into a prime (380881) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2156 + ... + 2325.

It is an arithmetic number, because the mean of its divisors is an integer number (60507).

2380885 is an apocalyptic number.

It is an amenable number.

380885 is a deficient number, since it is larger than the sum of its proper divisors (103171).

380885 is a wasteful number, since it uses less digits than its factorization.

380885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4503.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 380885 is about 617.1588126244. The cubic root of 380885 is about 72.4877506059.

The spelling of 380885 in words is "three hundred eighty thousand, eight hundred eighty-five".

Divisors: 1 5 17 85 4481 22405 76177 380885