52724280 has 128 divisors (see below), whose sum is σ = 188697600. Its totient is φ = 11523072.

The previous prime is 52724279. The next prime is 52724299. The reversal of 52724280 is 8242725.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17956 + ... + 20684.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 2^52724280 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 52724280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94348800).

52724280 is an abundant number, since it is smaller than the sum of its proper divisors (135973320).

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

52724280 is a wasteful number, since it uses less digits than its factorization.

52724280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773 (or 2769 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 52724280 is about 7261.1486694599. The cubic root of 52724280 is about 374.9760695840.

The spelling of 52724280 in words is "fifty-two million, seven hundred twenty-four thousand, two hundred eighty".