260442644 has 48 divisors (see below), whose sum is σ = 579868800. Its totient is φ = 101465280.

The previous prime is 260442641. The next prime is 260442647. The reversal of 260442644 is 446244062.

It is an interprime number because it is at equal distance from previous prime (260442641) and next prime (260442647).

It is a self number, because there is not a number n which added to its sum of digits gives 260442644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260442641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6464 + ... + 23720.

It is an arithmetic number, because the mean of its divisors is an integer number (12080600).

Almost surely, 2^260442644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260442644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289934400).

260442644 is an abundant number, since it is smaller than the sum of its proper divisors (319426156).

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

260442644 is a wasteful number, since it uses less digits than its factorization.

260442644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17293 (or 17277 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 260442644 is about 16138.2354673614. The cubic root of 260442644 is about 638.6124267426.

The spelling of 260442644 in words is "two hundred sixty million, four hundred forty-two thousand, six hundred forty-four".