261322336 has 24 divisors (see below), whose sum is σ = 561249864. Its totient is φ = 118782720.

The previous prime is 261322307. The next prime is 261322357. The reversal of 261322336 is 633223162.

261322336 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370845 + ... + 371548.

It is an arithmetic number, because the mean of its divisors is an integer number (23385411).

Almost surely, 2^261322336 is an apocalyptic number.

It is an amenable number.

261322336 is an abundant number, since it is smaller than the sum of its proper divisors (299927528).

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

261322336 is a wasteful number, since it uses less digits than its factorization.

261322336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742414 (or 742406 counting only the distinct ones).

The product of its digits is 7776, while the sum is 28.

The square root of 261322336 is about 16165.4673919439. The cubic root of 261322336 is about 639.3306282777.

Adding to 261322336 its reverse (633223162), we get a palindrome (894545498).

The spelling of 261322336 in words is "two hundred sixty-one million, three hundred twenty-two thousand, three hundred thirty-six".