1782073 has 4 divisors (see below), whose sum is σ = 1792548. Its totient is φ = 1771600.

The previous prime is 1782071. The next prime is 1782083. The reversal of 1782073 is 3702871.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3702871 = 163 ⋅22717.

It can be written as a sum of positive squares in 2 ways, for example, as 1671849 + 110224 = 1293^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1782073 - 2¹ = 1782071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1782071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4978 + ... + 5323.

It is an arithmetic number, because the mean of its divisors is an integer number (448137).

2^1782073 is an apocalyptic number.

It is an amenable number.

1782073 is a deficient number, since it is larger than the sum of its proper divisors (10475).

1782073 is a wasteful number, since it uses less digits than its factorization.

1782073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10474.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1782073 is about 1334.9430699472. The cubic root of 1782073 is about 121.2388560984.

The spelling of 1782073 in words is "one million, seven hundred eighty-two thousand, seventy-three".