261196888 has 16 divisors (see below), whose sum is σ = 490515480. Its totient is φ = 130392768.

The previous prime is 261196883. The next prime is 261196889. The reversal of 261196888 is 888691162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261196883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20245 + ... + 30532.

Almost surely, 2^261196888 is an apocalyptic number.

It is an amenable number.

261196888 is a deficient number, since it is larger than the sum of its proper divisors (229318592).

261196888 is a wasteful number, since it uses less digits than its factorization.

261196888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51426 (or 51422 counting only the distinct ones).

The product of its digits is 331776, while the sum is 49.

The square root of 261196888 is about 16161.5868032814. The cubic root of 261196888 is about 639.2283081736.

It can be divided in two parts, 2611 and 96888, that added together give a palindrome (99499).

The spelling of 261196888 in words is "two hundred sixty-one million, one hundred ninety-six thousand, eight hundred eighty-eight".