438498628 has 18 divisors (see below), whose sum is σ = 776778254. Its totient is φ = 216594144.

The previous prime is 438498623. The next prime is 438498631. The reversal of 438498628 is 826894834.

It can be written as a sum of positive squares in only one way, i.e., 416894724 + 21603904 = 20418^2 + 4648^2 .

It is not an unprimeable number, because it can be changed into a prime (438498623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19600 + ... + 35512.

Almost surely, 2^438498628 is an apocalyptic number.

It is an amenable number.

438498628 is a deficient number, since it is larger than the sum of its proper divisors (338279626).

438498628 is a wasteful number, since it uses less digits than its factorization.

438498628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16083 (or 15998 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 52.

The square root of 438498628 is about 20940.3588316915. The cubic root of 438498628 is about 759.7244083871.

The spelling of 438498628 in words is "four hundred thirty-eight million, four hundred ninety-eight thousand, six hundred twenty-eight".