261982298 has 16 divisors (see below), whose sum is σ = 414208320. Its totient is φ = 123931296.

The previous prime is 261982283. The next prime is 261982319. The reversal of 261982298 is 892289162.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27086 + ... + 35462.

It is an arithmetic number, because the mean of its divisors is an integer number (25888020).

Almost surely, 2^261982298 is an apocalyptic number.

261982298 is a deficient number, since it is larger than the sum of its proper divisors (152226022).

261982298 is a wasteful number, since it uses less digits than its factorization.

261982298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9221.

The product of its digits is 248832, while the sum is 47.

The square root of 261982298 is about 16185.8672303958. The cubic root of 261982298 is about 639.8683795087.

The spelling of 261982298 in words is "two hundred sixty-one million, nine hundred eighty-two thousand, two hundred ninety-eight".