261926327 has 32 divisors (see below), whose sum is σ = 309645504. Its totient is φ = 219340800.

The previous prime is 261926309. The next prime is 261926359. The reversal of 261926327 is 723629162.

It is not a de Polignac number, because 261926327 - 2¹² = 261922231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261926227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1241252 + ... + 1241462.

It is an arithmetic number, because the mean of its divisors is an integer number (9676422).

Almost surely, 2^261926327 is an apocalyptic number.

261926327 is a deficient number, since it is larger than the sum of its proper divisors (47719177).

261926327 is a wasteful number, since it uses less digits than its factorization.

261926327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419.

The product of its digits is 54432, while the sum is 38.

The square root of 261926327 is about 16184.1381296626. The cubic root of 261926327 is about 639.8228082059.

The spelling of 261926327 in words is "two hundred sixty-one million, nine hundred twenty-six thousand, three hundred twenty-seven".