261842896 has 40 divisors (see below), whose sum is σ = 590747904. Its totient is φ = 110098560.

The previous prime is 261842887. The next prime is 261842921. The reversal of 261842896 is 698248162.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16120 + ... + 27991.

Almost surely, 2^261842896 is an apocalyptic number.

It is an amenable number.

261842896 is an abundant number, since it is smaller than the sum of its proper divisors (328905008).

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

261842896 is a wasteful number, since it uses less digits than its factorization.

261842896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44179 (or 44173 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 261842896 is about 16181.5603697542. The cubic root of 261842896 is about 639.7548670586.

The spelling of 261842896 in words is "two hundred sixty-one million, eight hundred forty-two thousand, eight hundred ninety-six".