261348782 has 8 divisors (see below), whose sum is σ = 392607696. Its totient is φ = 130479552.

The previous prime is 261348779. The next prime is 261348809. The reversal of 261348782 is 287843162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95738 + ... + 98429.

It is an arithmetic number, because the mean of its divisors is an integer number (49075962).

Almost surely, 2^261348782 is an apocalyptic number.

261348782 is a deficient number, since it is larger than the sum of its proper divisors (131258914).

261348782 is a wasteful number, since it uses less digits than its factorization.

261348782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194842.

The product of its digits is 129024, while the sum is 41.

The square root of 261348782 is about 16166.2853494549. The cubic root of 261348782 is about 639.3521944498.

The spelling of 261348782 in words is "two hundred sixty-one million, three hundred forty-eight thousand, seven hundred eighty-two".