438275436 has 72 divisors (see below), whose sum is σ = 1111978560. Its totient is φ = 134254848.

The previous prime is 438275407. The next prime is 438275443. The reversal of 438275436 is 634572834.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147655 + ... + 150593.

Almost surely, 2^438275436 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 438275436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555989280).

438275436 is an abundant number, since it is smaller than the sum of its proper divisors (673703124).

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

438275436 is a wasteful number, since it uses less digits than its factorization.

438275436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023 (or 3004 counting only the distinct ones).

The product of its digits is 483840, while the sum is 42.

The square root of 438275436 is about 20935.0289228365. The cubic root of 438275436 is about 759.5954887993.

The spelling of 438275436 in words is "four hundred thirty-eight million, two hundred seventy-five thousand, four hundred thirty-six".