1678112 has 18 divisors (see below), whose sum is σ = 3318273. Its totient is φ = 835392.

The previous prime is 1678111. The next prime is 1678129. The reversal of 1678112 is 2118761.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1263376 + 414736 = 1124^2 + 644^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=916.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1678111) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7214 + ... + 7442.

2^1678112 is an apocalyptic number.

It is an amenable number.

1678112 is a deficient number, since it is larger than the sum of its proper divisors (1640161).

1678112 is an frugal number, since it uses more digits than its factorization.

1678112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 231 counting only the distinct ones).

The product of its digits is 672, while the sum is 26.

The square root of 1678112 is about 1295.4196231338. The cubic root of 1678112 is about 118.8338901223.

The spelling of 1678112 in words is "one million, six hundred seventy-eight thousand, one hundred twelve".