52128408 has 32 divisors (see below), whose sum is σ = 130628160. Its totient is φ = 17335200.

The previous prime is 52128407. The next prime is 52128421. The reversal of 52128408 is 80482125.

52128408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×52128408² = 5434741841228928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52128407) 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 in 7 ways as a sum of consecutive naturals, for example, 8883 + ... + 13533.

It is an arithmetic number, because the mean of its divisors is an integer number (4082130).

Almost surely, 2^52128408 is an apocalyptic number.

It is an amenable number.

52128408 is an abundant number, since it is smaller than the sum of its proper divisors (78499752).

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

52128408 is a wasteful number, since it uses less digits than its factorization.

52128408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127 (or 5123 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 52128408 is about 7220.0005540166. Note that the first 3 decimals coincide. The cubic root of 52128408 is about 373.5580966564.

The spelling of 52128408 in words is "fifty-two million, one hundred twenty-eight thousand, four hundred eight".