52800440 has 192 divisors, whose sum is σ = 157593600. Its totient is φ = 15724800.

The previous prime is 52800437. The next prime is 52800469. The reversal of 52800440 is 4400825.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 668321 + ... + 668399.

It is an arithmetic number, because the mean of its divisors is an integer number (820800).

Almost surely, 2^52800440 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 52800440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78796800).

52800440 is an abundant number, since it is smaller than the sum of its proper divisors (104793160).

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

52800440 is a wasteful number, since it uses less digits than its factorization.

52800440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 52800440 is about 7266.3911262744. The cubic root of 52800440 is about 375.1565331691.

The spelling of 52800440 in words is "fifty-two million, eight hundred thousand, four hundred forty".