1728912 has 40 divisors (see below), whose sum is σ = 4513600. Its totient is φ = 570240.

The previous prime is 1728911. The next prime is 1728949. The reversal of 1728912 is 2198271.

It is a self number, because there is not a number n which added to its sum of digits gives 1728912.

It is not an unprimeable number, because it can be changed into a prime (1728911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8589 + ... + 8787.

It is an arithmetic number, because the mean of its divisors is an integer number (112840).

2^1728912 is an apocalyptic number.

1728912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1728912 is an abundant number, since it is smaller than the sum of its proper divisors (2784688).

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

1728912 is a wasteful number, since it uses less digits than its factorization.

1728912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 385 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 1728912 is about 1314.8809832072. The cubic root of 1728912 is about 120.0211073982.

The spelling of 1728912 in words is "one million, seven hundred twenty-eight thousand, nine hundred twelve".