388216374 has 32 divisors (see below), whose sum is σ = 955610880. Its totient is φ = 102386592.

The previous prime is 388216357. The next prime is 388216391. The reversal of 388216374 is 473612883.

It is an interprime number because it is at equal distance from previous prime (388216357) and next prime (388216391).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354964 + ... + 356055.

It is an arithmetic number, because the mean of its divisors is an integer number (29862840).

Almost surely, 2^388216374 is an apocalyptic number.

388216374 is an abundant number, since it is smaller than the sum of its proper divisors (567394506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388216374 is a wasteful number, since it uses less digits than its factorization.

388216374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711044.

The product of its digits is 193536, while the sum is 42.

The square root of 388216374 is about 19703.2072008595. The cubic root of 388216374 is about 729.4988578982.

The spelling of 388216374 in words is "three hundred eighty-eight million, two hundred sixteen thousand, three hundred seventy-four".