388206243 has 16 divisors (see below), whose sum is σ = 576092160. Its totient is φ = 258366888.

The previous prime is 388206223. The next prime is 388206251. The reversal of 388206243 is 342602883.

388206243 is a `hidden beast` number, since 3 + 8 + 8 + 20 + 624 + 3 = 666.

It is not a de Polignac number, because 388206243 - 2¹² = 388202147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 388206198 and 388206207.

It is not an unprimeable number, because it can be changed into a prime (388206223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4546 + ... + 28232.

It is an arithmetic number, because the mean of its divisors is an integer number (36005760).

Almost surely, 2^388206243 is an apocalyptic number.

388206243 is a deficient number, since it is larger than the sum of its proper divisors (187885917).

388206243 is a wasteful number, since it uses less digits than its factorization.

388206243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24303 (or 24297 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 388206243 is about 19702.9501090573. The cubic root of 388206243 is about 729.4925121095.

The spelling of 388206243 in words is "three hundred eighty-eight million, two hundred six thousand, two hundred forty-three".