259426780 has 12 divisors (see below), whose sum is σ = 544796280. Its totient is φ = 103770704.

The previous prime is 259426751. The next prime is 259426799. The reversal of 259426780 is 87624952.

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 3 ways as a sum of consecutive naturals, for example, 6485650 + ... + 6485689.

It is an arithmetic number, because the mean of its divisors is an integer number (45399690).

Almost surely, 2^259426780 is an apocalyptic number.

259426780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

259426780 is an abundant number, since it is smaller than the sum of its proper divisors (285369500).

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

259426780 is a wasteful number, since it uses less digits than its factorization.

259426780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12971348 (or 12971346 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 259426780 is about 16106.7308911523. The cubic root of 259426780 is about 637.7810361562.

The spelling of 259426780 in words is "two hundred fifty-nine million, four hundred twenty-six thousand, seven hundred eighty".