438020064 has 36 divisors (see below), whose sum is σ = 1245620376. Its totient is φ = 146006592.

The previous prime is 438020039. The next prime is 438020081. The reversal of 438020064 is 460020834.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 760164 + ... + 760739.

It is an arithmetic number, because the mean of its divisors is an integer number (34600566).

Almost surely, 2^438020064 is an apocalyptic number.

It is an amenable number.

438020064 is an abundant number, since it is smaller than the sum of its proper divisors (807600312).

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

438020064 is a wasteful number, since it uses less digits than its factorization.

438020064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520919 (or 1520908 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 438020064 is about 20928.9288784687. The cubic root of 438020064 is about 759.4479277824.

Adding to 438020064 its reverse (460020834), we get a palindrome (898040898).

The spelling of 438020064 in words is "four hundred thirty-eight million, twenty thousand, sixty-four".