389619100728 has 768 divisors, whose sum is σ = 1343643033600. Its totient is φ = 103783680000.

The previous prime is 389619100621. The next prime is 389619100751. The reversal of 389619100728 is 827001916983.

389619100728 is a `hidden beast` number, since 3 + 8 + 9 + 619 + 10 + 0 + 7 + 2 + 8 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 747829108 + ... + 747829628.

It is an arithmetic number, because the mean of its divisors is an integer number (1749535200).

Almost surely, 2^389619100728 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 389619100728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (671821516800).

389619100728 is an abundant number, since it is smaller than the sum of its proper divisors (954023932872).

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

389619100728 is a wasteful number, since it uses less digits than its factorization.

389619100728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 389619100728 in words is "three hundred eighty-nine billion, six hundred nineteen million, one hundred thousand, seven hundred twenty-eight".