64320234 has 32 divisors (see below), whose sum is σ = 141739200. Its totient is φ = 19296000.

The previous prime is 64320233. The next prime is 64320241. The reversal of 64320234 is 43202346.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64320233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1842 + ... + 11490.

It is an arithmetic number, because the mean of its divisors is an integer number (4429350).

Almost surely, 2^64320234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64320234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70869600).

64320234 is an abundant number, since it is smaller than the sum of its proper divisors (77418966).

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

64320234 is a wasteful number, since it uses less digits than its factorization.

64320234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9766.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 64320234 is about 8019.9896508661. The cubic root of 64320234 is about 400.6660445129. Note that the first 3 decimals are identical.

The spelling of 64320234 in words is "sixty-four million, three hundred twenty thousand, two hundred thirty-four".