438718212 has 36 divisors (see below), whose sum is σ = 1114629516. Its totient is φ = 145494720.

The previous prime is 438718187. The next prime is 438718219. The reversal of 438718212 is 212817834.

438718212 is a `hidden beast` number, since 438 + 7 + 1 + 8 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 333573696 + 105144516 = 18264^2 + 10254^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (438718219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23839 + ... + 38022.

It is an arithmetic number, because the mean of its divisors is an integer number (30961931).

Almost surely, 2^438718212 is an apocalyptic number.

It is an amenable number.

438718212 is an abundant number, since it is smaller than the sum of its proper divisors (675911304).

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

438718212 is a wasteful number, since it uses less digits than its factorization.

438718212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62068 (or 62063 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 438718212 is about 20945.6012565885. The cubic root of 438718212 is about 759.8512012475.

The spelling of 438718212 in words is "four hundred thirty-eight million, seven hundred eighteen thousand, two hundred twelve".