450221616 has 60 divisors (see below), whose sum is σ = 1356923568. Its totient is φ = 138529152.

The previous prime is 450221609. The next prime is 450221617. The reversal of 450221616 is 616122054.

450221616 is a `hidden beast` number, since 45 + 0 + 2 + 2 + 1 + 616 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 450221616.

It is not an unprimeable number, because it can be changed into a prime (450221617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118380 + ... + 122123.

Almost surely, 2^450221616 is an apocalyptic number.

It is an amenable number.

450221616 is an abundant number, since it is smaller than the sum of its proper divisors (906701952).

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

450221616 is a wasteful number, since it uses less digits than its factorization.

450221616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240530 (or 240521 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 450221616 is about 21218.4263318466. The cubic root of 450221616 is about 766.4352091047.

The spelling of 450221616 in words is "four hundred fifty million, two hundred twenty-one thousand, six hundred sixteen".