450918780 has 96 divisors (see below), whose sum is σ = 1369804800. Its totient is φ = 110170368.

The previous prime is 450918763. The next prime is 450918781. The reversal of 450918780 is 87819054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450918781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106341 + ... + 110499.

It is an arithmetic number, because the mean of its divisors is an integer number (14268800).

Almost surely, 2^450918780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 450918780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684902400).

450918780 is an abundant number, since it is smaller than the sum of its proper divisors (918886020).

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

450918780 is a wasteful number, since it uses less digits than its factorization.

450918780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323 (or 4321 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 450918780 is about 21234.8482452783. The cubic root of 450918780 is about 766.8306110223.

The spelling of 450918780 in words is "four hundred fifty million, nine hundred eighteen thousand, seven hundred eighty".