389719728 has 160 divisors (see below), whose sum is σ = 1188257280. Its totient is φ = 122031360.

The previous prime is 389719727. The next prime is 389719739. The reversal of 389719728 is 827917983.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389719727) 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, 605775 + ... + 606417.

It is an arithmetic number, because the mean of its divisors is an integer number (7426608).

Almost surely, 2^389719728 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 389719728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594128640).

389719728 is an abundant number, since it is smaller than the sum of its proper divisors (798537552).

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

389719728 is a wasteful number, since it uses less digits than its factorization.

389719728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 732 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 389719728 is about 19741.3203205865. The cubic root of 389719728 is about 730.4392977316.

The spelling of 389719728 in words is "three hundred eighty-nine million, seven hundred nineteen thousand, seven hundred twenty-eight".