1728412 has 12 divisors (see below), whose sum is σ = 3456880. Its totient is φ = 740736.

The previous prime is 1728409. The next prime is 1728439. The reversal of 1728412 is 2148271.

It is a happy number.

1728412 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30837 + ... + 30892.

2^1728412 is an apocalyptic number.

It is an amenable number.

1728412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1728412 is a wasteful number, since it uses less digits than its factorization.

1728412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61740 (or 61738 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The square root of 1728412 is about 1314.6908381821. The cubic root of 1728412 is about 120.0095362792.

The spelling of 1728412 in words is "one million, seven hundred twenty-eight thousand, four hundred twelve".