9782028 has 18 divisors (see below), whose sum is σ = 24726884. Its totient is φ = 3260664.

The previous prime is 9782011. The next prime is 9782029. The reversal of 9782028 is 8202879.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 271723 = 9782028 / (9 + 7 + 8 + 2 + 0 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 9781983 and 9782001.

It is not an unprimeable number, because it can be changed into a prime (9782029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135826 + ... + 135897.

Almost surely, 2^9782028 is an apocalyptic number.

It is an amenable number.

9782028 is an abundant number, since it is smaller than the sum of its proper divisors (14944856).

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

9782028 is a wasteful number, since it uses less digits than its factorization.

9782028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271733 (or 271728 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 9782028 is about 3127.6233788613. The cubic root of 9782028 is about 213.8666009971.

The spelling of 9782028 in words is "nine million, seven hundred eighty-two thousand, twenty-eight".