1252728 has 48 divisors (see below), whose sum is σ = 3444480. Its totient is φ = 411264.

The previous prime is 1252721. The next prime is 1252729. The reversal of 1252728 is 8272521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9076 + ... + 9212.

It is an arithmetic number, because the mean of its divisors is an integer number (71760).

2^1252728 is an apocalyptic number.

1252728 is a gapful number since it is divisible by the number (18) 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 1252728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1722240).

1252728 is an abundant number, since it is smaller than the sum of its proper divisors (2191752).

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

1252728 is a wasteful number, since it uses less digits than its factorization.

1252728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 269 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 1252728 is about 1119.2533225325. The cubic root of 1252728 is about 107.8000415346.

The spelling of 1252728 in words is "one million, two hundred fifty-two thousand, seven hundred twenty-eight".