52128128 has 32 divisors (see below), whose sum is σ = 111840960. Its totient is φ = 24058368.

The previous prime is 52128127. The next prime is 52128149. The reversal of 52128128 is 82182125.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 52128128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52128127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14000 + ... + 17327.

It is an arithmetic number, because the mean of its divisors is an integer number (3495030).

Almost surely, 2^52128128 is an apocalyptic number.

It is an amenable number.

52128128 is an abundant number, since it is smaller than the sum of its proper divisors (59712832).

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

52128128 is a wasteful number, since it uses less digits than its factorization.

52128128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31354 (or 31342 counting only the distinct ones).

The product of its digits is 2560, while the sum is 29.

The square root of 52128128 is about 7219.9811634103. The cubic root of 52128128 is about 373.5574278180.

The spelling of 52128128 in words is "fifty-two million, one hundred twenty-eight thousand, one hundred twenty-eight".