261340376 has 16 divisors (see below), whose sum is σ = 534560040. Its totient is φ = 118791040.

The previous prime is 261340367. The next prime is 261340379. The reversal of 261340376 is 673043162.

261340376 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261340379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1484801 + ... + 1484976.

Almost surely, 2^261340376 is an apocalyptic number.

It is an amenable number.

261340376 is an abundant number, since it is smaller than the sum of its proper divisors (273219664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261340376 is a wasteful number, since it uses less digits than its factorization.

261340376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969794 (or 2969790 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 261340376 is about 16166.0253618507. The cubic root of 261340376 is about 639.3453396865.

The spelling of 261340376 in words is "two hundred sixty-one million, three hundred forty thousand, three hundred seventy-six".