438317268 has 12 divisors (see below), whose sum is σ = 1022740320. Its totient is φ = 146105752.

The previous prime is 438317249. The next prime is 438317287. The reversal of 438317268 is 862713834.

It is an interprime number because it is at equal distance from previous prime (438317249) and next prime (438317287).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18263208 + ... + 18263231.

It is an arithmetic number, because the mean of its divisors is an integer number (85228360).

Almost surely, 2^438317268 is an apocalyptic number.

It is an amenable number.

438317268 is an abundant number, since it is smaller than the sum of its proper divisors (584423052).

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

438317268 is a wasteful number, since it uses less digits than its factorization.

438317268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36526446 (or 36526444 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 438317268 is about 20936.0279900462. The cubic root of 438317268 is about 759.6196550236.

The spelling of 438317268 in words is "four hundred thirty-eight million, three hundred seventeen thousand, two hundred sixty-eight".