1782272 has 30 divisors (see below), whose sum is σ = 3622443. Its totient is φ = 876032.

The previous prime is 1782271. The next prime is 1782281. The reversal of 1782272 is 2722871.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 891136 + 891136 = 944^2 + 944^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=944.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (1782271) 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 2 ways as a sum of consecutive naturals, for example, 30179 + ... + 30237.

2^1782272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1782272

1782272 is an abundant number, since it is smaller than the sum of its proper divisors (1840171).

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

1782272 is an frugal number, since it uses more digits than its factorization.

1782272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 61 counting only the distinct ones).

The product of its digits is 3136, while the sum is 29.

The square root of 1782272 is about 1335.0176028802. The cubic root of 1782272 is about 121.2433687520.

The spelling of 1782272 in words is "one million, seven hundred eighty-two thousand, two hundred seventy-two".