450028 has 6 divisors (see below), whose sum is σ = 787556. Its totient is φ = 225012.

The previous prime is 450019. The next prime is 450029. The reversal of 450028 is 820054.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 449987 and 450014.

It is not an unprimeable number, because it can be changed into a prime (450029) by changing a digit.

450028 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56250 + ... + 56257.

2⁴⁵⁰⁰²⁸ is an apocalyptic number.

It is an amenable number.

450028 is a deficient number, since it is larger than the sum of its proper divisors (337528).

450028 is a wasteful number, since it uses less digits than its factorization.

450028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112511 (or 112509 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 450028 is about 670.8412628931. The cubic root of 450028 is about 76.6325325889.

The spelling of 450028 in words is "four hundred fifty thousand, twenty-eight".