438287668 has 96 divisors (see below), whose sum is σ = 1003520000. Its totient is φ = 162642816.

The previous prime is 438287653. The next prime is 438287771. The reversal of 438287668 is 866782834.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 878083 + ... + 878581.

Almost surely, 2^438287668 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 438287668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501760000).

438287668 is an abundant number, since it is smaller than the sum of its proper divisors (565232332).

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

438287668 is a wasteful number, since it uses less digits than its factorization.

438287668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 667 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 52.

The square root of 438287668 is about 20935.3210627399. The cubic root of 438287668 is about 759.6025553491.

The spelling of 438287668 in words is "four hundred thirty-eight million, two hundred eighty-seven thousand, six hundred sixty-eight".