1425728 has 14 divisors (see below), whose sum is σ = 2829306. Its totient is φ = 712832.

The previous prime is 1425707. The next prime is 1425733. The reversal of 1425728 is 8275241.

It can be written as a sum of positive squares in only one way, i.e., 1364224 + 61504 = 1168^2 + 248^2 .

It is a super-3 number, since 3×1425728³ = 8694233328202285056, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1425728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11075 + ... + 11202.

2^1425728 is an apocalyptic number.

It is an amenable number.

1425728 is a deficient number, since it is larger than the sum of its proper divisors (1403578).

1425728 is an equidigital number, since it uses as much as digits as its factorization.

1425728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22289 (or 22279 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 1425728 is about 1194.0385253416. The cubic root of 1425728 is about 112.5500156207.

The spelling of 1425728 in words is "one million, four hundred twenty-five thousand, seven hundred twenty-eight".