261494344 has 16 divisors (see below), whose sum is σ = 493138620. Its totient is φ = 129990720.

The previous prime is 261494339. The next prime is 261494369. The reversal of 261494344 is 443494162.

It can be written as a sum of positive squares in 2 ways, for example, as 207648100 + 53846244 = 14410^2 + 7338^2 .

It is an unprimeable number.

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, 93087 + ... + 95854.

Almost surely, 2^261494344 is an apocalyptic number.

It is an amenable number.

261494344 is a deficient number, since it is larger than the sum of its proper divisors (231644276).

261494344 is a wasteful number, since it uses less digits than its factorization.

261494344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189120 (or 189116 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 261494344 is about 16170.7867464759. The cubic root of 261494344 is about 639.4708712499.

The spelling of 261494344 in words is "two hundred sixty-one million, four hundred ninety-four thousand, three hundred forty-four".