387725824 has 40 divisors (see below), whose sum is σ = 801438660. Its totient is φ = 187170816.

The previous prime is 387725813. The next prime is 387725839. The reversal of 387725824 is 428527783.

It can be written as a sum of positive squares in 2 ways, for example, as 385415424 + 2310400 = 19632^2 + 1520^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1792 + ... + 27904.

Almost surely, 2^387725824 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 387725824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400719330).

387725824 is an abundant number, since it is smaller than the sum of its proper divisors (413712836).

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

387725824 is an equidigital number, since it uses as much as digits as its factorization.

387725824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26160 (or 26144 counting only the distinct ones).

The product of its digits is 752640, while the sum is 46.

The square root of 387725824 is about 19690.7547849238. The cubic root of 387725824 is about 729.1914636001.

The spelling of 387725824 in words is "three hundred eighty-seven million, seven hundred twenty-five thousand, eight hundred twenty-four".