438740064 has 120 divisors (see below), whose sum is σ = 1474715088. Its totient is φ = 125349120.

The previous prime is 438740041. The next prime is 438740069. The reversal of 438740064 is 460047834.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438740069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6054 + ... + 30234.

Almost surely, 2^438740064 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 438740064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737357544).

438740064 is an abundant number, since it is smaller than the sum of its proper divisors (1035975024).

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

438740064 is a wasteful number, since it uses less digits than its factorization.

438740064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24210 (or 24193 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 438740064 is about 20946.1228870643. The cubic root of 438740064 is about 759.8638167809.

Adding to 438740064 its reverse (460047834), we get a palindrome (898787898).

The spelling of 438740064 in words is "four hundred thirty-eight million, seven hundred forty thousand, sixty-four".