538235280 has 280 divisors, whose sum is σ = 2049243840. Its totient is φ = 130325760.

The previous prime is 538235261. The next prime is 538235293. The reversal of 538235280 is 82532835.

538235280 is a `hidden beast` number, since 53 + 82 + 3 + 528 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 641101 + ... + 641939.

It is an arithmetic number, because the mean of its divisors is an integer number (7318728).

Almost surely, 2^538235280 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 538235280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1024621920).

538235280 is an abundant number, since it is smaller than the sum of its proper divisors (1511008560).

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

538235280 is a wasteful number, since it uses less digits than its factorization.

538235280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 538235280 is about 23199.8982756391. The cubic root of 538235280 is about 813.4372452264.

The spelling of 538235280 in words is "five hundred thirty-eight million, two hundred thirty-five thousand, two hundred eighty".