1722984 has 64 divisors (see below), whose sum is σ = 4717440. Its totient is φ = 522240.

The previous prime is 1722983. The next prime is 1722989. The reversal of 1722984 is 4892271.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1722983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16677 + ... + 16779.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2^1722984 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 1722984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2358720).

1722984 is an abundant number, since it is smaller than the sum of its proper divisors (2994456).

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

1722984 is a wasteful number, since it uses less digits than its factorization.

1722984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 166 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 1722984 is about 1312.6248512046. The cubic root of 1722984 is about 119.8837763591.

The spelling of 1722984 in words is "one million, seven hundred twenty-two thousand, nine hundred eighty-four".