64444230 has 48 divisors (see below), whose sum is σ = 168564240. Its totient is φ = 17081664.

The previous prime is 64444213. The next prime is 64444231. The reversal of 64444230 is 3244446.

It is a junction number, because it is equal to n+sod(n) for n = 64444194 and 64444203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64444231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13501 + ... + 17639.

It is an arithmetic number, because the mean of its divisors is an integer number (3511755).

Almost surely, 2^64444230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64444230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84282120).

64444230 is an abundant number, since it is smaller than the sum of its proper divisors (104120010).

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

64444230 is a wasteful number, since it uses less digits than its factorization.

64444230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325 (or 4322 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 64444230 is about 8027.7163627024. The cubic root of 64444230 is about 400.9233461066.

Adding to 64444230 its reverse (3244446), we get a palindrome (67688676).

The spelling of 64444230 in words is "sixty-four million, four hundred forty-four thousand, two hundred thirty".