261236044 has 12 divisors (see below), whose sum is σ = 460453000. Its totient is φ = 129678048.

The previous prime is 261236029. The next prime is 261236077. The reversal of 261236044 is 440632162.

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, 234369 + ... + 235480.

Almost surely, 2^261236044 is an apocalyptic number.

It is an amenable number.

261236044 is a deficient number, since it is larger than the sum of its proper divisors (199216956).

261236044 is a wasteful number, since it uses less digits than its factorization.

261236044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469992 (or 469990 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 261236044 is about 16162.7981488355. The cubic root of 261236044 is about 639.2602487953.

The spelling of 261236044 in words is "two hundred sixty-one million, two hundred thirty-six thousand, forty-four".