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BaseRepresentation
bin10101101000
31220021
4111220
521014
610224
74015
oct2550
91807
101384
111049
12974
13826
1470c
15624
hex568

1384 has 8 divisors (see below), whose sum is σ = 2610. Its totient is φ = 688.

The previous prime is 1381. The next prime is 1399. The reversal of 1384 is 4831.

It can be written as a sum of positive squares in only one way, i.e., 900 + 484 = 30^2 + 22^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79 + ... + 94.

21384 is an apocalyptic number.

It is an amenable number.

1384 is a deficient number, since it is larger than the sum of its proper divisors (1226).

1384 is a wasteful number, since it uses less digits than its factorization.

1384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 175 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 1384 is about 37.2021504755. The cubic root of 1384 is about 11.1441093111.

The spelling of 1384 in words is "one thousand, three hundred eighty-four".

Divisors: 1 2 4 8 173 346 692 1384