52840220 has 48 divisors (see below), whose sum is σ = 115153920. Its totient is φ = 20353344.

The previous prime is 52840219. The next prime is 52840231. The reversal of 52840220 is 2204825.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62561 + ... + 63399.

It is an arithmetic number, because the mean of its divisors is an integer number (2399040).

Almost surely, 2^52840220 is an apocalyptic number.

It is an amenable number.

52840220 is an abundant number, since it is smaller than the sum of its proper divisors (62313700).

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

52840220 is a wasteful number, since it uses less digits than its factorization.

52840220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 960 counting only the distinct ones).

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

The square root of 52840220 is about 7269.1278706596. The cubic root of 52840220 is about 375.2507241809.

The spelling of 52840220 in words is "fifty-two million, eight hundred forty thousand, two hundred twenty".