388115520 has 224 divisors, whose sum is σ = 1342631808. Its totient is φ = 94420992.

The previous prime is 388115447. The next prime is 388115531. The reversal of 388115520 is 25511883.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1709647 + ... + 1709873.

It is an arithmetic number, because the mean of its divisors is an integer number (5993892).

Almost surely, 2^388115520 is an apocalyptic number.

388115520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388115520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (671315904).

388115520 is an abundant number, since it is smaller than the sum of its proper divisors (954516288).

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

388115520 is a wasteful number, since it uses less digits than its factorization.

388115520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 388115520 is about 19700.6477050883. The cubic root of 388115520 is about 729.4356807159.

The spelling of 388115520 in words is "three hundred eighty-eight million, one hundred fifteen thousand, five hundred twenty".