261234886 has 24 divisors (see below), whose sum is σ = 456057000. Its totient is φ = 111756480.

The previous prime is 261234881. The next prime is 261234889. The reversal of 261234886 is 688432162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261234881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27636 + ... + 35863.

It is an arithmetic number, because the mean of its divisors is an integer number (19002375).

Almost surely, 2^261234886 is an apocalyptic number.

261234886 is a deficient number, since it is larger than the sum of its proper divisors (194822114).

261234886 is a wasteful number, since it uses less digits than its factorization.

261234886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63540 (or 63529 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 261234886 is about 16162.7623257907. The cubic root of 261234886 is about 639.2593042288.

The spelling of 261234886 in words is "two hundred sixty-one million, two hundred thirty-four thousand, eight hundred eighty-six".