64128248 has 8 divisors (see below), whose sum is σ = 120240480. Its totient is φ = 32064120.

The previous prime is 64128247. The next prime is 64128277. The reversal of 64128248 is 84282146.

64128248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×64128248² = 8224864383099008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64128247) 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 as a sum of consecutive naturals, namely, 4008008 + ... + 4008023.

It is an arithmetic number, because the mean of its divisors is an integer number (15030060).

Almost surely, 2^64128248 is an apocalyptic number.

It is an amenable number.

64128248 is a deficient number, since it is larger than the sum of its proper divisors (56112232).

64128248 is a wasteful number, since it uses less digits than its factorization.

64128248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8016037 (or 8016033 counting only the distinct ones).

The product of its digits is 24576, while the sum is 35.

The square root of 64128248 is about 8008.0114885032. The cubic root of 64128248 is about 400.2670050644.

The spelling of 64128248 in words is "sixty-four million, one hundred twenty-eight thousand, two hundred forty-eight".