1728371928 has 64 divisors (see below), whose sum is σ = 4573958400. Its totient is φ = 543312000.

The previous prime is 1728371921. The next prime is 1728371959. The reversal of 1728371928 is 8291738271.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728371921) 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, 1053 + ... + 58803.

It is an arithmetic number, because the mean of its divisors is an integer number (71468100).

Almost surely, 2^1728371928 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 1728371928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286979200).

1728371928 is an abundant number, since it is smaller than the sum of its proper divisors (2845586472).

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

1728371928 is a wasteful number, since it uses less digits than its factorization.

1728371928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57832 (or 57828 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 1728371928 is about 41573.6927395198. The cubic root of 1728371928 is about 1200.0860882683.

The spelling of 1728371928 in words is "one billion, seven hundred twenty-eight million, three hundred seventy-one thousand, nine hundred twenty-eight".