260688444 has 12 divisors (see below), whose sum is σ = 608273064. Its totient is φ = 86896144.

The previous prime is 260688443. The next prime is 260688457. The reversal of 260688444 is 444886062.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×260688444² = 135916929670282272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 260688396 and 260688405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260688443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10862007 + ... + 10862030.

It is an arithmetic number, because the mean of its divisors is an integer number (50689422).

Almost surely, 2^260688444 is an apocalyptic number.

It is an amenable number.

260688444 is an abundant number, since it is smaller than the sum of its proper divisors (347584620).

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

260688444 is a wasteful number, since it uses less digits than its factorization.

260688444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21724044 (or 21724042 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The square root of 260688444 is about 16145.8491260138. The cubic root of 260688444 is about 638.8132663287.

The spelling of 260688444 in words is "two hundred sixty million, six hundred eighty-eight thousand, four hundred forty-four".