287028229 has 2 divisors, whose sum is σ = 287028230. Its totient is φ = 287028228.

The previous prime is 287028211. The next prime is 287028257. The reversal of 287028229 is 922820782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150185025 + 136843204 = 12255^2 + 11698^2 .

It is a cyclic number.

It is not a de Polignac number, because 287028229 - 2⁵ = 287028197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 287028191 and 287028200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287028299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143514114 + 143514115.

It is an arithmetic number, because the mean of its divisors is an integer number (143514115).

Almost surely, 2^287028229 is an apocalyptic number.

It is an amenable number.

287028229 is a deficient number, since it is larger than the sum of its proper divisors (1).

287028229 is an equidigital number, since it uses as much as digits as its factorization.

287028229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 287028229 is about 16941.9074782033. The cubic root of 287028229 is about 659.6418542045.

The spelling of 287028229 in words is "two hundred eighty-seven million, twenty-eight thousand, two hundred twenty-nine".