1982728 has 16 divisors (see below), whose sum is σ = 4055760. Its totient is φ = 901200.

The previous prime is 1982723. The next prime is 1982741. The reversal of 1982728 is 8272891.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1982723) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11178 + ... + 11353.

It is an arithmetic number, because the mean of its divisors is an integer number (253485).

2^1982728 is an apocalyptic number.

It is an amenable number.

1982728 is an abundant number, since it is smaller than the sum of its proper divisors (2073032).

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

1982728 is a wasteful number, since it uses less digits than its factorization.

1982728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22548 (or 22544 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 1982728 is about 1408.0937468791. The cubic root of 1982728 is about 125.6283666169.

It can be divided in two parts, 198 and 2728, that added together give a triangular number (2926 = T₇₆).

The spelling of 1982728 in words is "one million, nine hundred eighty-two thousand, seven hundred twenty-eight".