260689920 has 104 divisors (see below), whose sum is σ = 834302496. Its totient is φ = 69500928.

The previous prime is 260689909. The next prime is 260689921. The reversal of 260689920 is 29986062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260689921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59319 + ... + 63561.

Almost surely, 2^260689920 is an apocalyptic number.

260689920 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 260689920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417151248).

260689920 is an abundant number, since it is smaller than the sum of its proper divisors (573612576).

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

260689920 is an equidigital number, since it uses as much as digits as its factorization.

260689920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275 (or 4253 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 260689920 is about 16145.8948342915. The cubic root of 260689920 is about 638.8144719653.

The spelling of 260689920 in words is "two hundred sixty million, six hundred eighty-nine thousand, nine hundred twenty".