260812780 has 12 divisors (see below), whose sum is σ = 547706880. Its totient is φ = 104325104.

The previous prime is 260812777. The next prime is 260812807. The reversal of 260812780 is 87218062.

It is a super-2 number, since 2×260812780² = 136046612422656800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6520300 + ... + 6520339.

It is an arithmetic number, because the mean of its divisors is an integer number (45642240).

Almost surely, 2^260812780 is an apocalyptic number.

260812780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260812780 is an abundant number, since it is smaller than the sum of its proper divisors (286894100).

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

260812780 is a wasteful number, since it uses less digits than its factorization.

260812780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13040648 (or 13040646 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 260812780 is about 16149.6990684037. The cubic root of 260812780 is about 638.9148113770.

The spelling of 260812780 in words is "two hundred sixty million, eight hundred twelve thousand, seven hundred eighty".