388742606 has 8 divisors (see below), whose sum is σ = 666415920. Its totient is φ = 166603968.

The previous prime is 388742597. The next prime is 388742623. The reversal of 388742606 is 606247883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×388742606² = 302241627439342472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13883651 + ... + 13883678.

It is an arithmetic number, because the mean of its divisors is an integer number (83301990).

Almost surely, 2^388742606 is an apocalyptic number.

388742606 is a deficient number, since it is larger than the sum of its proper divisors (277673314).

388742606 is a wasteful number, since it uses less digits than its factorization.

388742606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27767338.

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 388742606 is about 19716.5566466358. The cubic root of 388742606 is about 729.8283239256.

The spelling of 388742606 in words is "three hundred eighty-eight million, seven hundred forty-two thousand, six hundred six".