260251290 has 48 divisors (see below), whose sum is σ = 728706888. Its totient is φ = 64061568.

The previous prime is 260251273. The next prime is 260251309. The reversal of 260251290 is 92152062.

260251290 is a `hidden beast` number, since 2 + 60 + 2 + 512 + 90 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 106069401 + 154181889 = 10299^2 + 12417^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110049 + ... + 112388.

Almost surely, 2^260251290 is an apocalyptic number.

260251290 is an abundant number, since it is smaller than the sum of its proper divisors (468455598).

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

260251290 is a wasteful number, since it uses less digits than its factorization.

260251290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222463 (or 222460 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 260251290 is about 16132.3057868365. The cubic root of 260251290 is about 638.4559866902.

The spelling of 260251290 in words is "two hundred sixty million, two hundred fifty-one thousand, two hundred ninety".