1724489 has 8 divisors (see below), whose sum is σ = 1875720. Its totient is φ = 1575936.

The previous prime is 1724483. The next prime is 1724507. The reversal of 1724489 is 9844271.

It can be written as a sum of positive squares in 4 ways, for example, as 78400 + 1646089 = 280^2 + 1283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1724489 - 2⁴ = 1724473 is a prime.

It is a super-2 number, since 2×1724489² = 5947724622242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1724483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (234465).

2^1724489 is an apocalyptic number.

It is an amenable number.

1724489 is a deficient number, since it is larger than the sum of its proper divisors (151231).

1724489 is a wasteful number, since it uses less digits than its factorization.

1724489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339.

The product of its digits is 16128, while the sum is 35.

The square root of 1724489 is about 1313.1980048721. The cubic root of 1724489 is about 119.9186717453.

The spelling of 1724489 in words is "one million, seven hundred twenty-four thousand, four hundred eighty-nine".