52808840 has 32 divisors (see below), whose sum is σ = 135794880. Its totient is φ = 18105792.

The previous prime is 52808839. The next prime is 52808843. The reversal of 52808840 is 4880825.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 52808840.

It is not an unprimeable number, because it can be changed into a prime (52808843) 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, 94022 + ... + 94581.

It is an arithmetic number, because the mean of its divisors is an integer number (4243590).

Almost surely, 2^52808840 is an apocalyptic number.

It is an amenable number.

52808840 is an abundant number, since it is smaller than the sum of its proper divisors (82986040).

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

52808840 is a wasteful number, since it uses less digits than its factorization.

52808840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188621 (or 188617 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 35.

The square root of 52808840 is about 7266.9691068560. The cubic root of 52808840 is about 375.1764266130.

The spelling of 52808840 in words is "fifty-two million, eight hundred eight thousand, eight hundred forty".