438316928 has 64 divisors (see below), whose sum is σ = 1050518400. Its totient is φ = 177956352.

The previous prime is 438316913. The next prime is 438316951. The reversal of 438316928 is 829613834.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4151 + ... + 29897.

It is an arithmetic number, because the mean of its divisors is an integer number (16414350).

Almost surely, 2^438316928 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 438316928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525259200).

438316928 is an abundant number, since it is smaller than the sum of its proper divisors (612201472).

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

438316928 is a wasteful number, since it uses less digits than its factorization.

438316928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25787 (or 25775 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 438316928 is about 20936.0198700708. The cubic root of 438316928 is about 759.6194586128.

The spelling of 438316928 in words is "four hundred thirty-eight million, three hundred sixteen thousand, nine hundred twenty-eight".