260123556 has 144 divisors (see below), whose sum is σ = 778643712. Its totient is φ = 66830400.

The previous prime is 260123489. The next prime is 260123587. The reversal of 260123556 is 655321062.

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 47 ways as a sum of consecutive naturals, for example, 847155 + ... + 847461.

It is an arithmetic number, because the mean of its divisors is an integer number (5407248).

Almost surely, 2^260123556 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 260123556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389321856).

260123556 is an abundant number, since it is smaller than the sum of its proper divisors (518520156).

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

260123556 is a wasteful number, since it uses less digits than its factorization.

260123556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 260123556 is about 16128.3463504477. The cubic root of 260123556 is about 638.3515160163.

The spelling of 260123556 in words is "two hundred sixty million, one hundred twenty-three thousand, five hundred fifty-six".