450685782 has 72 divisors (see below), whose sum is σ = 1059198504. Its totient is φ = 143614944.

The previous prime is 450685747. The next prime is 450685787. The reversal of 450685782 is 287586054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450685787) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 256218 + ... + 257970.

Almost surely, 2^450685782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 450685782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529599252).

450685782 is an abundant number, since it is smaller than the sum of its proper divisors (608512722).

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

450685782 is a wasteful number, since it uses less digits than its factorization.

450685782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 1781 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 450685782 is about 21229.3613187020. The cubic root of 450685782 is about 766.6985097885.

The spelling of 450685782 in words is "four hundred fifty million, six hundred eighty-five thousand, seven hundred eighty-two".