450278564 has 24 divisors (see below), whose sum is σ = 814644600. Its totient is φ = 217624320.

The previous prime is 450278561. The next prime is 450278581. The reversal of 450278564 is 465872054.

It can be written as a sum of positive squares in 4 ways, for example, as 107288164 + 342990400 = 10358^2 + 18520^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (450278561) 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, 5282 + ... + 30470.

It is an arithmetic number, because the mean of its divisors is an integer number (33943525).

Almost surely, 2^450278564 is an apocalyptic number.

It is an amenable number.

450278564 is a deficient number, since it is larger than the sum of its proper divisors (364366036).

450278564 is a wasteful number, since it uses less digits than its factorization.

450278564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25343 (or 25341 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The square root of 450278564 is about 21219.7682362461. The cubic root of 450278564 is about 766.4675229035.

The spelling of 450278564 in words is "four hundred fifty million, two hundred seventy-eight thousand, five hundred sixty-four".