260244864 has 144 divisors (see below), whose sum is σ = 823591860. Its totient is φ = 78819840.

The previous prime is 260244851. The next prime is 260244871. The reversal of 260244864 is 468442062.

It is a happy number.

260244864 is a `hidden beast` number, since 2 + 602 + 4 + 48 + 6 + 4 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 138459 + ... + 140325.

Almost surely, 2^260244864 is an apocalyptic number.

260244864 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 260244864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411795930).

260244864 is an abundant number, since it is smaller than the sum of its proper divisors (563346996).

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

260244864 is a wasteful number, since it uses less digits than its factorization.

260244864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 260244864 is about 16132.1066200295. The cubic root of 260244864 is about 638.4507318306.

The spelling of 260244864 in words is "two hundred sixty million, two hundred forty-four thousand, eight hundred sixty-four".