1675728 has 60 divisors (see below), whose sum is σ = 4874688. Its totient is φ = 557280.

The previous prime is 1675721. The next prime is 1675733. The reversal of 1675728 is 8275761.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 1675692 and 1675701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1675721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3673 + ... + 4103.

2^1675728 is an apocalyptic number.

1675728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1675728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2437344).

1675728 is an abundant number, since it is smaller than the sum of its proper divisors (3198960).

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

1675728 is an equidigital number, since it uses as much as digits as its factorization.

1675728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 436 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 1675728 is about 1294.4991309383. The cubic root of 1675728 is about 118.7775898959. Note that the first 3 decimals are identical.

The spelling of 1675728 in words is "one million, six hundred seventy-five thousand, seven hundred twenty-eight".