64044420 has 96 divisors (see below), whose sum is σ = 204180480. Its totient is φ = 14847360.

The previous prime is 64044413. The next prime is 64044439. The reversal of 64044420 is 2444046.

64044420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13071 + ... + 17289.

It is an arithmetic number, because the mean of its divisors is an integer number (2126880).

Almost surely, 2^64044420 is an apocalyptic number.

64044420 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 64044420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102090240).

64044420 is an abundant number, since it is smaller than the sum of its proper divisors (140136060).

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

64044420 is a wasteful number, since it uses less digits than its factorization.

64044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265 (or 4263 counting only the distinct ones).

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

The square root of 64044420 is about 8002.7757684443. The cubic root of 64044420 is about 400.0925202650.

Adding to 64044420 its reverse (2444046), we get a palindrome (66488466).

The spelling of 64044420 in words is "sixty-four million, forty-four thousand, four hundred twenty".