42864768 has 128 divisors (see below), whose sum is σ = 128928000. Its totient is φ = 14017536.

The previous prime is 42864763. The next prime is 42864821. The reversal of 42864768 is 86746824.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (42864763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272946 + ... + 273102.

It is an arithmetic number, because the mean of its divisors is an integer number (1007250).

Almost surely, 2^42864768 is an apocalyptic number.

42864768 is a gapful number since it is divisible by the number (48) 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 42864768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64464000).

42864768 is an abundant number, since it is smaller than the sum of its proper divisors (86063232).

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

42864768 is a wasteful number, since it uses less digits than its factorization.

42864768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 241 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 42864768 is about 6547.1190610833. The cubic root of 42864768 is about 349.9721556080.

The spelling of 42864768 in words is "forty-two million, eight hundred sixty-four thousand, seven hundred sixty-eight".