53228420 has 24 divisors (see below), whose sum is σ = 127748544. Its totient is φ = 18249696.

The previous prime is 53228419. The next prime is 53228423. The reversal of 53228420 is 2482235.

It is a self number, because there is not a number n which added to its sum of digits gives 53228420.

It is not an unprimeable number, because it can be changed into a prime (53228423) 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 7 ways as a sum of consecutive naturals, for example, 189962 + ... + 190241.

It is an arithmetic number, because the mean of its divisors is an integer number (5322856).

Almost surely, 2^53228420 is an apocalyptic number.

It is an amenable number.

53228420 is an abundant number, since it is smaller than the sum of its proper divisors (74520124).

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

53228420 is a wasteful number, since it uses less digits than its factorization.

53228420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380219 (or 380217 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 53228420 is about 7295.7809725896. The cubic root of 53228420 is about 376.1674314682.

The spelling of 53228420 in words is "fifty-three million, two hundred twenty-eight thousand, four hundred twenty".