1996728 has 32 divisors (see below), whose sum is σ = 5026560.
Its totient is φ = 660960.
The previous prime is 1996723. The next prime is 1996739. The reversal of 1996728 is 8276991.
It is a self number, because there is not a number n which added to its sum of digits gives 1996728.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1996721) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6351 + ... + 6657.
It is an arithmetic number, because the mean of its divisors is an integer number (157080).
21996728 is an apocalyptic number.
It is an amenable number.
1996728 is an abundant number, since it is smaller than the sum of its proper divisors (3029832).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1996728 is a wasteful number, since it uses less digits than its factorization.
1996728 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 587 (or 583 counting only the distinct ones).
The product of its digits is 54432, while the sum is 42.
The square root of 1996728 is about 1413.0562621495.
The cubic root of 1996728 is about 125.9233597922.
The spelling of 1996728 in words is "one million, nine hundred ninety-six thousand, seven hundred twenty-eight".