261246446 has 8 divisors (see below), whose sum is σ = 414920880. Its totient is φ = 122939488.

The previous prime is 261246437. The next prime is 261246449. The reversal of 261246446 is 644642162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261246449) 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, 3841826 + ... + 3841893.

It is an arithmetic number, because the mean of its divisors is an integer number (51865110).

Almost surely, 2^261246446 is an apocalyptic number.

261246446 is a deficient number, since it is larger than the sum of its proper divisors (153674434).

261246446 is a wasteful number, since it uses less digits than its factorization.

261246446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7683738.

The product of its digits is 55296, while the sum is 35.

The square root of 261246446 is about 16163.1199339731. The cubic root of 261246446 is about 639.2687334551.

The spelling of 261246446 in words is "two hundred sixty-one million, two hundred forty-six thousand, four hundred forty-six".