260778460 has 24 divisors (see below), whose sum is σ = 547968960. Its totient is φ = 104247744.

The previous prime is 260778451. The next prime is 260778461. The reversal of 260778460 is 64877062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260778461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43357 + ... + 49003.

It is an arithmetic number, because the mean of its divisors is an integer number (22832040).

Almost surely, 2^260778460 is an apocalyptic number.

260778460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260778460 is an abundant number, since it is smaller than the sum of its proper divisors (287190500).

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

260778460 is a wasteful number, since it uses less digits than its factorization.

260778460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7965 (or 7963 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 260778460 is about 16148.6364749474. The cubic root of 260778460 is about 638.8867855031.

The spelling of 260778460 in words is "two hundred sixty million, seven hundred seventy-eight thousand, four hundred sixty".