Search a number
-
+
143793 = 32131229
BaseRepresentation
bin100011000110110001
321022020200
4203012301
514100133
63025413
71136136
oct430661
9238220
10143793
1199041
126b269
13505b0
143a58d
152c913
hex231b1

143793 has 12 divisors (see below), whose sum is σ = 223860. Its totient is φ = 88416.

The previous prime is 143791. The next prime is 143797. The reversal of 143793 is 397341.

It can be written as a sum of positive squares in 2 ways, for example, as 91809 + 51984 = 303^2 + 228^2 .

It is not a de Polignac number, because 143793 - 21 = 143791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 498 + ... + 731.

It is an arithmetic number, because the mean of its divisors is an integer number (18655).

143793 is a Friedman number, since it can be written as 47931*3, using all its digits and the basic arithmetic operations.

2143793 is an apocalyptic number.

143793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

143793 is a deficient number, since it is larger than the sum of its proper divisors (80067).

143793 is a wasteful number, since it uses less digits than its factorization.

143793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248 (or 1245 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 143793 is about 379.2004746832. The cubic root of 143793 is about 52.3897004017.

The spelling of 143793 in words is "one hundred forty-three thousand, seven hundred ninety-three".

Divisors: 1 3 9 13 39 117 1229 3687 11061 15977 47931 143793