64244448 has 48 divisors (see below), whose sum is σ = 187382160. Its totient is φ = 21414528.

The previous prime is 64244423. The next prime is 64244461. The reversal of 64244448 is 84444246.

64244448 is a `hidden beast` number, since 642 + 4 + 4 + 4 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36315 + ... + 38042.

It is an arithmetic number, because the mean of its divisors is an integer number (3903795).

Almost surely, 2^64244448 is an apocalyptic number.

It is an amenable number.

64244448 is an abundant number, since it is smaller than the sum of its proper divisors (123137712).

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

64244448 is a wasteful number, since it uses less digits than its factorization.

64244448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74376 (or 74362 counting only the distinct ones).

The product of its digits is 98304, while the sum is 36.

The square root of 64244448 is about 8015.2634392140. The cubic root of 64244448 is about 400.5086196577.

The spelling of 64244448 in words is "sixty-four million, two hundred forty-four thousand, four hundred forty-eight".