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380902 = 2172659
BaseRepresentation
bin1011100111111100110
3201100111111
41130333212
544142102
612055234
73144334
oct1347746
9640444
10380902
112401a5
1216451a
131044b2
149cb54
1577cd7
hex5cfe6

380902 has 12 divisors (see below), whose sum is σ = 607860. Its totient is φ = 178976.

The previous prime is 380881. The next prime is 380909. The reversal of 380902 is 209083.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380909) 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 5 ways as a sum of consecutive naturals, for example, 249 + ... + 907.

It is an arithmetic number, because the mean of its divisors is an integer number (50655).

2380902 is an apocalyptic number.

380902 is a deficient number, since it is larger than the sum of its proper divisors (226958).

380902 is a wasteful number, since it uses less digits than its factorization.

380902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 380902 is about 617.1725852628. The cubic root of 380902 is about 72.4888290359.

Adding to 380902 its reverse (209083), we get a palindrome (589985).

The spelling of 380902 in words is "three hundred eighty thousand, nine hundred two".

Divisors: 1 2 17 34 289 578 659 1318 11203 22406 190451 380902