53328920 has 48 divisors (see below), whose sum is σ = 122376960. Its totient is φ = 20915264.

The previous prime is 53328917. The next prime is 53328943. The reversal of 53328920 is 2982335.

53328920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 139049 + ... + 139431.

It is an arithmetic number, because the mean of its divisors is an integer number (2549520).

Almost surely, 2^53328920 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 53328920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61188480).

53328920 is an abundant number, since it is smaller than the sum of its proper divisors (69048040).

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

53328920 is a wasteful number, since it uses less digits than its factorization.

53328920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 53328920 is about 7302.6652668735. The cubic root of 53328920 is about 376.4040285018.

The spelling of 53328920 in words is "fifty-three million, three hundred twenty-eight thousand, nine hundred twenty".