260398944 has 144 divisors (see below), whose sum is σ = 804362832. Its totient is φ = 79432704.

The previous prime is 260398937. The next prime is 260398949. The reversal of 260398944 is 449893062.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×260398944² = 135615220072630272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 260398944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260398949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 587587 + ... + 588029.

It is an arithmetic number, because the mean of its divisors is an integer number (5585853).

Almost surely, 2^260398944 is an apocalyptic number.

260398944 is a gapful number since it is divisible by the number (24) 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 260398944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402181416).

260398944 is an abundant number, since it is smaller than the sum of its proper divisors (543963888).

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

260398944 is a wasteful number, since it uses less digits than its factorization.

260398944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 260398944 is about 16136.8814831119. The cubic root of 260398944 is about 638.5767068829.

The spelling of 260398944 in words is "two hundred sixty million, three hundred ninety-eight thousand, nine hundred forty-four".