1724480 has 56 divisors (see below), whose sum is σ = 4361688. Its totient is φ = 647168.

The previous prime is 1724473. The next prime is 1724483. The reversal of 1724480 is 844271.

It can be written as a sum of positive squares in 4 ways, for example, as 65536 + 1658944 = 256^2 + 1288^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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, 5282 + ... + 5598.

2^1724480 is an apocalyptic number.

1724480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1724480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2180844).

1724480 is an abundant number, since it is smaller than the sum of its proper divisors (2637208).

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

1724480 is a wasteful number, since it uses less digits than its factorization.

1724480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 1724480 is about 1313.1945781186. The cubic root of 1724480 is about 119.9184631289.

The spelling of 1724480 in words is "one million, seven hundred twenty-four thousand, four hundred eighty".