388720367 has 8 divisors (see below), whose sum is σ = 444432000. Its totient is φ = 333053784.

The previous prime is 388720337. The next prime is 388720393. The reversal of 388720367 is 763027883.

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

It is a de Polignac number, because none of the positive numbers 2^k-388720367 is a prime.

It is a super-2 number, since 2×388720367² = 302207047441229378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388720307) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9884 + ... + 29582.

It is an arithmetic number, because the mean of its divisors is an integer number (55554000).

Almost surely, 2^388720367 is an apocalyptic number.

388720367 is a deficient number, since it is larger than the sum of its proper divisors (55711633).

388720367 is a wasteful number, since it uses less digits than its factorization.

388720367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22525.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 388720367 is about 19715.9926709258. The cubic root of 388720367 is about 729.8144064377.

The spelling of 388720367 in words is "three hundred eighty-eight million, seven hundred twenty thousand, three hundred sixty-seven".