261105892 has 12 divisors (see below), whose sum is σ = 469285180. Its totient is φ = 127024416.

The previous prime is 261105883. The next prime is 261105899. The reversal of 261105892 is 298501162.

It can be written as a sum of positive squares in 2 ways, for example, as 97930816 + 163175076 = 9896^2 + 12774^2 .

It is not an unprimeable number, because it can be changed into a prime (261105899) 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, 881967 + ... + 882262.

Almost surely, 2^261105892 is an apocalyptic number.

It is an amenable number.

261105892 is a deficient number, since it is larger than the sum of its proper divisors (208179288).

261105892 is a wasteful number, since it uses less digits than its factorization.

261105892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764270 (or 1764268 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 261105892 is about 16158.7713641848. The cubic root of 261105892 is about 639.1540679128.

The spelling of 261105892 in words is "two hundred sixty-one million, one hundred five thousand, eight hundred ninety-two".