1725240 has 64 divisors (see below), whose sum is σ = 5650560. Its totient is φ = 417920.

The previous prime is 1725233. The next prime is 1725247. The reversal of 1725240 is 425271.

It is an interprime number because it is at equal distance from previous prime (1725233) and next prime (1725247).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1725247) 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, 667 + ... + 1973.

It is an arithmetic number, because the mean of its divisors is an integer number (88290).

2^1725240 is an apocalyptic number.

1725240 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 1725240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2825280).

1725240 is an abundant number, since it is smaller than the sum of its proper divisors (3925320).

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

1725240 is a wasteful number, since it uses less digits than its factorization.

1725240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1725240 is about 1313.4839169171. The cubic root of 1725240 is about 119.9360770660.

The spelling of 1725240 in words is "one million, seven hundred twenty-five thousand, two hundred forty".