64393448 has 64 divisors (see below), whose sum is σ = 145536000. Its totient is φ = 26671680.

The previous prime is 64393447. The next prime is 64393457. The reversal of 64393448 is 84439346.

64393448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64393448² = 8293032290657408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64393447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 84686 + ... + 85442.

It is an arithmetic number, because the mean of its divisors is an integer number (2274000).

Almost surely, 2^64393448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64393448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72768000).

64393448 is an abundant number, since it is smaller than the sum of its proper divisors (81142552).

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

64393448 is a wasteful number, since it uses less digits than its factorization.

64393448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 797 counting only the distinct ones).

The product of its digits is 248832, while the sum is 41.

The square root of 64393448 is about 8024.5528224319. The cubic root of 64393448 is about 400.8180093448.

The spelling of 64393448 in words is "sixty-four million, three hundred ninety-three thousand, four hundred forty-eight".