260002780 has 12 divisors (see below), whose sum is σ = 546005880. Its totient is φ = 104001104.

The previous prime is 260002763. The next prime is 260002871. The reversal of 260002780 is 87200062.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6500050 + ... + 6500089.

It is an arithmetic number, because the mean of its divisors is an integer number (45500490).

Almost surely, 2^260002780 is an apocalyptic number.

260002780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260002780 is an abundant number, since it is smaller than the sum of its proper divisors (286003100).

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

260002780 is a wasteful number, since it uses less digits than its factorization.

260002780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13000148 (or 13000146 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 260002780 is about 16124.6017005072. The cubic root of 260002780 is about 638.2527046679.

The spelling of 260002780 in words is "two hundred sixty million, two thousand, seven hundred eighty".