64444200 has 96 divisors (see below), whose sum is σ = 210328800. Its totient is φ = 16277760.

The previous prime is 64444187. The next prime is 64444201. The reversal of 64444200 is 244446.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (64444201) 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, 8574 + ... + 14226.

It is an arithmetic number, because the mean of its divisors is an integer number (2190925).

Almost surely, 2^64444200 is an apocalyptic number.

64444200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64444200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105164400).

64444200 is an abundant number, since it is smaller than the sum of its proper divisors (145884600).

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

64444200 is a wasteful number, since it uses less digits than its factorization.

64444200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691 (or 5682 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 64444200 is about 8027.7144941758. The cubic root of 64444200 is about 400.9232838941.

Adding to 64444200 its reverse (244446), we get a palindrome (64688646).

It can be divided in two parts, 644 and 44200, that added together give a palindrome (44844).

The spelling of 64444200 in words is "sixty-four million, four hundred forty-four thousand, two hundred".