450090028 has 12 divisors (see below), whose sum is σ = 833990472. Its totient is φ = 211807040.

The previous prime is 450090007. The next prime is 450090029. The reversal of 450090028 is 820090054.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 450089978 and 450090005.

It is not an unprimeable number, because it can be changed into a prime (450090029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3309418 + ... + 3309553.

It is an arithmetic number, because the mean of its divisors is an integer number (69499206).

Almost surely, 2^450090028 is an apocalyptic number.

It is an amenable number.

450090028 is a deficient number, since it is larger than the sum of its proper divisors (383900444).

450090028 is a wasteful number, since it uses less digits than its factorization.

450090028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6618992 (or 6618990 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 450090028 is about 21215.3253097849. The cubic root of 450090028 is about 766.3605321753.

The spelling of 450090028 in words is "four hundred fifty million, ninety thousand, twenty-eight".