1726272 has 98 divisors (see below), whose sum is σ = 5274818. Its totient is φ = 559872.

The previous prime is 1726267. The next prime is 1726273. The reversal of 1726272 is 2726271.

It can be written as a sum of positive squares in only one way, i.e., 1679616 + 46656 = 1296^2 + 216^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

Its product of digits (2352) is a multiple of the sum of its prime divisors (42).

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1726273) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 46638 + ... + 46674.

2^1726272 is an apocalyptic number.

1726272 is a gapful number since it is divisible by the number (12) 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 1726272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2637409).

1726272 is an abundant number, since it is smaller than the sum of its proper divisors (3548546).

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

1726272 is an frugal number, since it uses more digits than its factorization.

1726272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67 (or 42 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 1726272 is about 1313.8767065444. The cubic root of 1726272 is about 119.9599866593.

1726272 divided by its sum of digits (27) gives a palindrome (63936).

Subtracting 1726272 from its reverse (2726271), we obtain a palindrome (999999).

The spelling of 1726272 in words is "one million, seven hundred twenty-six thousand, two hundred seventy-two".