52040280 has 64 divisors (see below), whose sum is σ = 159459840. Its totient is φ = 13580672.

The previous prime is 52040279. The next prime is 52040293. The reversal of 52040280 is 8204025.

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, 1027 + ... + 10253.

It is an arithmetic number, because the mean of its divisors is an integer number (2491560).

Almost surely, 2^52040280 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 52040280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79729920).

52040280 is an abundant number, since it is smaller than the sum of its proper divisors (107419560).

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

52040280 is a wasteful number, since it uses less digits than its factorization.

52040280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9288 (or 9284 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 52040280 is about 7213.8949257665. The cubic root of 52040280 is about 373.3474661600.

The spelling of 52040280 in words is "fifty-two million, forty thousand, two hundred eighty".