1782828 has 18 divisors (see below), whose sum is σ = 4506684. Its totient is φ = 594264.

The previous prime is 1782817. The next prime is 1782829. The reversal of 1782828 is 8282871.

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: 49523 = 1782828 / (1 + 7 + 8 + 2 + 8 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 1782792 and 1782801.

It is not an unprimeable number, because it can be changed into a prime (1782829) 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, 24726 + ... + 24797.

2^1782828 is an apocalyptic number.

1782828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1782828 is an abundant number, since it is smaller than the sum of its proper divisors (2723856).

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

1782828 is a wasteful number, since it uses less digits than its factorization.

1782828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49533 (or 49528 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 1782828 is about 1335.2258235969. The cubic root of 1782828 is about 121.2559751900.

The spelling of 1782828 in words is "one million, seven hundred eighty-two thousand, eight hundred twenty-eight".