261133286 has 8 divisors (see below), whose sum is σ = 395361000. Its totient is φ = 129346288.

The previous prime is 261133273. The next prime is 261133289. The reversal of 261133286 is 682331162.

261133286 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261133289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609911 + ... + 610338.

It is an arithmetic number, because the mean of its divisors is an integer number (49420125).

Almost surely, 2^261133286 is an apocalyptic number.

261133286 is a deficient number, since it is larger than the sum of its proper divisors (134227714).

261133286 is a wasteful number, since it uses less digits than its factorization.

261133286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220358.

The product of its digits is 10368, while the sum is 32.

The square root of 261133286 is about 16159.6189930332. The cubic root of 261133286 is about 639.1764194756.

The spelling of 261133286 in words is "two hundred sixty-one million, one hundred thirty-three thousand, two hundred eighty-six".