52748280 has 288 divisors, whose sum is σ = 202251600. Its totient is φ = 12220416.

The previous prime is 52748249. The next prime is 52748281. The reversal of 52748280 is 8284725.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52748281) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3102832 + ... + 3102848.

Almost surely, 2^52748280 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 52748280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101125800).

52748280 is an abundant number, since it is smaller than the sum of its proper divisors (149503320).

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

52748280 is a wasteful number, since it uses less digits than its factorization.

52748280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 52748280 is about 7262.8011125185. The cubic root of 52748280 is about 375.0329571035.

The spelling of 52748280 in words is "fifty-two million, seven hundred forty-eight thousand, two hundred eighty".