Search a number
-
+
815029 is a prime number
BaseRepresentation
bin11000110111110110101
31112102000021
43012332311
5202040104
625245141
76633115
oct3067665
91472007
10815029
11507386
123337b1
13226c87
14173045
15111754
hexc6fb5

815029 has 2 divisors, whose sum is σ = 815030. Its totient is φ = 815028.

The previous prime is 814991. The next prime is 815033. The reversal of 815029 is 920518.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 762129 + 52900 = 873^2 + 230^2 .

It is a cyclic number.

It is not a de Polignac number, because 815029 - 27 = 814901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 814994 and 815012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (815729) 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 as a sum of consecutive naturals, namely, 407514 + 407515.

It is an arithmetic number, because the mean of its divisors is an integer number (407515).

2815029 is an apocalyptic number.

It is an amenable number.

815029 is a deficient number, since it is larger than the sum of its proper divisors (1).

815029 is an equidigital number, since it uses as much as digits as its factorization.

815029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 815029 is about 902.7895657350. The cubic root of 815029 is about 93.4094942409.

The spelling of 815029 in words is "eight hundred fifteen thousand, twenty-nine".