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BaseRepresentation
bin10000110001
31110202
4100301
513243
64545
73062
oct2061
91422
101073
11896
12755
13647
14569
154b8
hex431

1073 has 4 divisors (see below), whose sum is σ = 1140. Its totient is φ = 1008.

The previous prime is 1069. The next prime is 1087. The reversal of 1073 is 3701.

Adding to 1073 its reverse (3701), we get a palindrome (4774).

Subtracting 1073 from its reverse (3701), we obtain a triangular number (2628 = T72).

1073 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 784 + 289 = 28^2 + 17^2 .

It is a cyclic number.

It is not a de Polignac number, because 1073 - 22 = 1069 is a prime.

It is a d-powerful number, because it can be written as 1 + 73 + 0 + 36 .

It is a Duffinian number.

1073 is an undulating number in base 6.

It is a plaindrome in base 14.

It is a nialpdrome in base 12 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11 + ... + 47.

It is an arithmetic number, because the mean of its divisors is an integer number (285).

It is an amenable number.

1073 is a deficient number, since it is larger than the sum of its proper divisors (67).

1073 is an equidigital number, since it uses as much as digits as its factorization.

1073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66.

The product of its (nonzero) digits is 21, while the sum is 11.

The square root of 1073 is about 32.7566787083. The cubic root of 1073 is about 10.2376412617.

The spelling of 1073 in words is "one thousand, seventy-three", and thus it is an iban number.

Divisors: 1 29 37 1073