388720546 has 8 divisors (see below), whose sum is σ = 584473680. Its totient is φ = 193895988.

The previous prime is 388720543. The next prime is 388720643. The reversal of 388720546 is 645027883.

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

It is a super-2 number, since 2×388720546² = 302207325765076232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388720543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231096 + ... + 232771.

It is an arithmetic number, because the mean of its divisors is an integer number (73059210).

Almost surely, 2^388720546 is an apocalyptic number.

388720546 is a deficient number, since it is larger than the sum of its proper divisors (195753134).

388720546 is a wasteful number, since it uses less digits than its factorization.

388720546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464288.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 388720546 is about 19715.9972103873. The cubic root of 388720546 is about 729.8145184606.

The spelling of 388720546 in words is "three hundred eighty-eight million, seven hundred twenty thousand, five hundred forty-six".