450021612 has 24 divisors (see below), whose sum is σ = 1105316800. Its totient is φ = 142112016.

The previous prime is 450021599. The next prime is 450021619. The reversal of 450021612 is 216120054.

It is not an unprimeable number, because it can be changed into a prime (450021619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986662 + ... + 987117.

Almost surely, 2^450021612 is an apocalyptic number.

It is an amenable number.

450021612 is an abundant number, since it is smaller than the sum of its proper divisors (655295188).

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

450021612 is a wasteful number, since it uses less digits than its factorization.

450021612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973805 (or 1973803 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 450021612 is about 21213.7128292055. The cubic root of 450021612 is about 766.3216999597.

Adding to 450021612 its reverse (216120054), we get a palindrome (666141666).

The spelling of 450021612 in words is "four hundred fifty million, twenty-one thousand, six hundred twelve".