260449940 has 12 divisors (see below), whose sum is σ = 546944916. Its totient is φ = 104179968.

The previous prime is 260449927. The next prime is 260449997. The reversal of 260449940 is 49944062.

It can be written as a sum of positive squares in 2 ways, for example, as 192321424 + 68128516 = 13868^2 + 8254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 260449894 and 260449903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6511229 + ... + 6511268.

It is an arithmetic number, because the mean of its divisors is an integer number (45578743).

Almost surely, 2^260449940 is an apocalyptic number.

260449940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260449940 is an abundant number, since it is smaller than the sum of its proper divisors (286494976).

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

260449940 is a wasteful number, since it uses less digits than its factorization.

260449940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13022506 (or 13022504 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 260449940 is about 16138.4615127961. The cubic root of 260449940 is about 638.6183900168.

The spelling of 260449940 in words is "two hundred sixty million, four hundred forty-nine thousand, nine hundred forty".