260564238 has 48 divisors (see below), whose sum is σ = 635761152. Its totient is φ = 76410000.

The previous prime is 260564221. The next prime is 260564251. The reversal of 260564238 is 832465062.

260564238 is a `hidden beast` number, since 2 + 6 + 0 + 5 + 642 + 3 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15088 + ... + 27363.

It is an arithmetic number, because the mean of its divisors is an integer number (13245024).

Almost surely, 2^260564238 is an apocalyptic number.

260564238 is an abundant number, since it is smaller than the sum of its proper divisors (375196914).

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

260564238 is a wasteful number, since it uses less digits than its factorization.

260564238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42501 (or 42498 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 260564238 is about 16142.0022921569. The cubic root of 260564238 is about 638.7117952086.

The spelling of 260564238 in words is "two hundred sixty million, five hundred sixty-four thousand, two hundred thirty-eight".