388028243 has 2 divisors, whose sum is σ = 388028244. Its totient is φ = 388028242.

The previous prime is 388028233. The next prime is 388028257. The reversal of 388028243 is 342820883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 388028243 - 2¹⁰ = 388027219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 388028197 and 388028206.

It is not a weakly prime, because it can be changed into another prime (388028233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194014121 + 194014122.

It is an arithmetic number, because the mean of its divisors is an integer number (194014122).

Almost surely, 2^388028243 is an apocalyptic number.

388028243 is a deficient number, since it is larger than the sum of its proper divisors (1).

388028243 is an equidigital number, since it uses as much as digits as its factorization.

388028243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 388028243 is about 19698.4325010900. The cubic root of 388028243 is about 729.3809996332.

It can be divided in two parts, 3880 and 28243, that added together give a palindrome (32123).

The spelling of 388028243 in words is "three hundred eighty-eight million, twenty-eight thousand, two hundred forty-three".