261000368 has 40 divisors (see below), whose sum is σ = 531485328. Its totient is φ = 124008192.

The previous prime is 261000361. The next prime is 261000403. The reversal of 261000368 is 863000162.

261000368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×261000368³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (261000361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20330 + ... + 30582.

Almost surely, 2^261000368 is an apocalyptic number.

It is an amenable number.

261000368 is an abundant number, since it is smaller than the sum of its proper divisors (270484960).

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

261000368 is a wasteful number, since it uses less digits than its factorization.

261000368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10341 (or 10335 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 261000368 is about 16155.5058107136. The cubic root of 261000368 is about 639.0679531934.

The spelling of 261000368 in words is "two hundred sixty-one million, three hundred sixty-eight", and thus it is an aban number.