52228440 has 192 divisors, whose sum is σ = 188416800. Its totient is φ = 12545280.

The previous prime is 52228439. The next prime is 52228453. The reversal of 52228440 is 4482225.

It is a happy number.

52228440 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 47 ways as a sum of consecutive naturals, for example, 479106 + ... + 479214.

Almost surely, 2^52228440 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 52228440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94208400).

52228440 is an abundant number, since it is smaller than the sum of its proper divisors (136188360).

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

52228440 is a wasteful number, since it uses less digits than its factorization.

52228440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 52228440 is about 7226.9246571415. The cubic root of 52228440 is about 373.7968908704.

The spelling of 52228440 in words is "fifty-two million, two hundred twenty-eight thousand, four hundred forty".