387960320 has 160 divisors (see below), whose sum is σ = 1060646400. Its totient is φ = 134717440.

The previous prime is 387960317. The next prime is 387960329. The reversal of 387960320 is 23069783.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387960329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 647381 + ... + 647979.

It is an arithmetic number, because the mean of its divisors is an integer number (6629040).

Almost surely, 2^387960320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387960320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530323200).

387960320 is an abundant number, since it is smaller than the sum of its proper divisors (672686080).

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

387960320 is a wasteful number, since it uses less digits than its factorization.

387960320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 387960320 is about 19696.7083544434. The cubic root of 387960320 is about 729.3384386105.

The spelling of 387960320 in words is "three hundred eighty-seven million, nine hundred sixty thousand, three hundred twenty".