438016340 has 24 divisors (see below), whose sum is σ = 920513160. Its totient is φ = 175077248.

The previous prime is 438016333. The next prime is 438016357. The reversal of 438016340 is 43610834.

It can be written as a sum of positive squares in 4 ways, for example, as 142038724 + 295977616 = 11918^2 + 17204^2 .

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, 22526 + ... + 37194.

It is an arithmetic number, because the mean of its divisors is an integer number (38354715).

Almost surely, 2^438016340 is an apocalyptic number.

It is an amenable number.

438016340 is an abundant number, since it is smaller than the sum of its proper divisors (482496820).

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

438016340 is a wasteful number, since it uses less digits than its factorization.

438016340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16171 (or 16169 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 438016340 is about 20928.8399105158. The cubic root of 438016340 is about 759.4457755278.

The spelling of 438016340 in words is "four hundred thirty-eight million, sixteen thousand, three hundred forty".