1608728 has 32 divisors (see below), whose sum is σ = 3341520. Its totient is φ = 720000.

The previous prime is 1608713. The next prime is 1608743. The reversal of 1608728 is 8278061.

It is an interprime number because it is at equal distance from previous prime (1608713) and next prime (1608743).

It is a junction number, because it is equal to n+sod(n) for n = 1608694 and 1608703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8798 + ... + 8978.

2^1608728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1608728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1670760).

1608728 is an abundant number, since it is smaller than the sum of its proper divisors (1732792).

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

1608728 is a wasteful number, since it uses less digits than its factorization.

1608728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1608728 is about 1268.3564167851. The cubic root of 1608728 is about 117.1729975416.

It can be divided in two parts, 160 and 8728, that added together give a palindrome (8888).

The spelling of 1608728 in words is "one million, six hundred eight thousand, seven hundred twenty-eight".