260868990 has 32 divisors (see below), whose sum is σ = 653308416. Its totient is φ = 66540320.

The previous prime is 260868983. The next prime is 260869009. The reversal of 260868990 is 99868062.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188346 + ... + 189725.

It is an arithmetic number, because the mean of its divisors is an integer number (20415888).

Almost surely, 2^260868990 is an apocalyptic number.

260868990 is an abundant number, since it is smaller than the sum of its proper divisors (392439426).

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

260868990 is a wasteful number, since it uses less digits than its factorization.

260868990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378104.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 260868990 is about 16151.4392547537. The cubic root of 260868990 is about 638.9607074176.

The spelling of 260868990 in words is "two hundred sixty million, eight hundred sixty-eight thousand, nine hundred ninety".