1728136 has 16 divisors (see below), whose sum is σ = 3254940. Its totient is φ = 860160.

The previous prime is 1728121. The next prime is 1728149. The reversal of 1728136 is 6318271.

It can be written as a sum of positive squares in 2 ways, for example, as 1705636 + 22500 = 1306^2 + 150^2 .

It is a super-3 number, since 3×1728136³ = 15482996188073338368, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2376 + ... + 3016.

2^1728136 is an apocalyptic number.

It is an amenable number.

1728136 is a deficient number, since it is larger than the sum of its proper divisors (1526804).

1728136 is a wasteful number, since it uses less digits than its factorization.

1728136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 980 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 1728136 is about 1314.5858663473. The cubic root of 1728136 is about 120.0031480656.

The spelling of 1728136 in words is "one million, seven hundred twenty-eight thousand, one hundred thirty-six".