260889816 has 32 divisors (see below), whose sum is σ = 711518400. Its totient is φ = 79057440.

The previous prime is 260889793. The next prime is 260889821. The reversal of 260889816 is 618988062.

260889816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493846 + ... + 494373.

It is an arithmetic number, because the mean of its divisors is an integer number (22234950).

Almost surely, 2^260889816 is an apocalyptic number.

It is an amenable number.

260889816 is an abundant number, since it is smaller than the sum of its proper divisors (450628584).

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

260889816 is a wasteful number, since it uses less digits than its factorization.

260889816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988239 (or 988235 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 260889816 is about 16152.0839522335. The cubic root of 260889816 is about 638.9777103860.

The spelling of 260889816 in words is "two hundred sixty million, eight hundred eighty-nine thousand, eight hundred sixteen".