260317820 has 48 divisors (see below), whose sum is σ = 628275648. Its totient is φ = 88750080.

The previous prime is 260317817. The next prime is 260317831. The reversal of 260317820 is 28713062.

It is a happy number.

260317820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 20204 + ... + 30476.

It is an arithmetic number, because the mean of its divisors is an integer number (13089076).

Almost surely, 2^260317820 is an apocalyptic number.

260317820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260317820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314137824).

260317820 is an abundant number, since it is smaller than the sum of its proper divisors (367957828).

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

260317820 is a wasteful number, since it uses less digits than its factorization.

260317820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10470 (or 10468 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 260317820 is about 16134.3676665682. The cubic root of 260317820 is about 638.5103864945.

The spelling of 260317820 in words is "two hundred sixty million, three hundred seventeen thousand, eight hundred twenty".