388078667 has 32 divisors (see below), whose sum is σ = 438177600. Its totient is φ = 342171648.

The previous prime is 388078657. The next prime is 388078697. The reversal of 388078667 is 766870883.

It is a cyclic number.

It is not a de Polignac number, because 388078667 - 2⁴ = 388078651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388078627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2832623 + ... + 2832759.

It is an arithmetic number, because the mean of its divisors is an integer number (13693050).

Almost surely, 2^388078667 is an apocalyptic number.

388078667 is a deficient number, since it is larger than the sum of its proper divisors (50098933).

388078667 is a wasteful number, since it uses less digits than its factorization.

388078667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The square root of 388078667 is about 19699.7123583061. The cubic root of 388078667 is about 729.4125924491.

It can be divided in two parts, 38807 and 8667, that added together give a palindrome (47474).

The spelling of 388078667 in words is "three hundred eighty-eight million, seventy-eight thousand, six hundred sixty-seven".