16389728460 has 192 divisors, whose sum is σ = 58735165440. Its totient is φ = 3716616960.

The previous prime is 16389728437. The next prime is 16389728477. The reversal of 16389728460 is 6482798361.

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

It is a junction number, because it is equal to n+sod(n) for n = 16389728397 and 16389728406.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 462990 + ... + 497130.

It is an arithmetic number, because the mean of its divisors is an integer number (305912320).

Almost surely, 2^16389728460 is an apocalyptic number.

16389728460 is a gapful number since it is divisible by the number (10) 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 16389728460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29367582720).

16389728460 is an abundant number, since it is smaller than the sum of its proper divisors (42345436980).

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

16389728460 is a wasteful number, since it uses less digits than its factorization.

16389728460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34293 (or 34285 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 16389728460 in words is "sixteen billion, three hundred eighty-nine million, seven hundred twenty-eight thousand, four hundred sixty".