228358387 has 2 divisors, whose sum is σ = 228358388. Its totient is φ = 228358386.

The previous prime is 228358373. The next prime is 228358391. The reversal of 228358387 is 783853822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228358387 - 2¹⁵ = 228325619 is a prime.

It is not a weakly prime, because it can be changed into another prime (228358327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114179193 + 114179194.

It is an arithmetic number, because the mean of its divisors is an integer number (114179194).

Almost surely, 2^228358387 is an apocalyptic number.

228358387 is a deficient number, since it is larger than the sum of its proper divisors (1).

228358387 is an equidigital number, since it uses as much as digits as its factorization.

228358387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 46.

The square root of 228358387 is about 15111.5315901466. The cubic root of 228358387 is about 611.2313985722.

The spelling of 228358387 in words is "two hundred twenty-eight million, three hundred fifty-eight thousand, three hundred eighty-seven".