260919870 has 64 divisors (see below), whose sum is σ = 650889216. Its totient is φ = 66867840.

The previous prime is 260919833. The next prime is 260919881. The reversal of 260919870 is 78919062.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145117 + ... + 146903.

It is an arithmetic number, because the mean of its divisors is an integer number (10170144).

Almost surely, 2^260919870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260919870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325444608).

260919870 is an abundant number, since it is smaller than the sum of its proper divisors (389969346).

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

260919870 is a wasteful number, since it uses less digits than its factorization.

260919870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 260919870 is about 16153.0142697888. The cubic root of 260919870 is about 639.0022457742.

The spelling of 260919870 in words is "two hundred sixty million, nine hundred nineteen thousand, eight hundred seventy".