1720672 has 24 divisors (see below), whose sum is σ = 3587976. Its totient is φ = 809472.

The previous prime is 1720669. The next prime is 1720679. The reversal of 1720672 is 2760271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720679) 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, 1038 + ... + 2125.

It is an arithmetic number, because the mean of its divisors is an integer number (149499).

2^1720672 is an apocalyptic number.

It is an amenable number.

1720672 is an abundant number, since it is smaller than the sum of its proper divisors (1867304).

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

1720672 is a wasteful number, since it uses less digits than its factorization.

1720672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190 (or 3182 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 1720672 is about 1311.7438774395. The cubic root of 1720672 is about 119.8301300187.

The spelling of 1720672 in words is "one million, seven hundred twenty thousand, six hundred seventy-two".