53239968 has 72 divisors (see below), whose sum is σ = 152107956. Its totient is φ = 17664000.

The previous prime is 53239933. The next prime is 53239999. The reversal of 53239968 is 86993235.

It can be written as a sum of positive squares in 2 ways, for example, as 49956624 + 3283344 = 7068^2 + 1812^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115258 + ... + 115718.

Almost surely, 2^53239968 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 53239968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76053978).

53239968 is an abundant number, since it is smaller than the sum of its proper divisors (98867988).

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

53239968 is a wasteful number, since it uses less digits than its factorization.

53239968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 867 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 53239968 is about 7296.5723459718. The cubic root of 53239968 is about 376.1946328980.

The spelling of 53239968 in words is "fifty-three million, two hundred thirty-nine thousand, nine hundred sixty-eight".