1445428 has 6 divisors (see below), whose sum is σ = 2529506. Its totient is φ = 722712.

The previous prime is 1445419. The next prime is 1445429. The reversal of 1445428 is 8245441.

It can be written as a sum of positive squares in only one way, i.e., 1106704 + 338724 = 1052^2 + 582^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1445396 and 1445405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180675 + ... + 180682.

2^1445428 is an apocalyptic number.

It is an amenable number.

1445428 is a deficient number, since it is larger than the sum of its proper divisors (1084078).

1445428 is a wasteful number, since it uses less digits than its factorization.

1445428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361361 (or 361359 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

The square root of 1445428 is about 1202.2595393674. The cubic root of 1445428 is about 113.0660328806.

The spelling of 1445428 in words is "one million, four hundred forty-five thousand, four hundred twenty-eight".