259798356 has 54 divisors (see below), whose sum is σ = 680217902. Its totient is φ = 83603520.

The previous prime is 259798351. The next prime is 259798379. The reversal of 259798356 is 653897952.

It can be written as a sum of positive squares in 3 ways, for example, as 266256 + 259532100 = 516^2 + 16110^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259798351) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25986 + ... + 34566.

Almost surely, 2^259798356 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 259798356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340108951).

259798356 is an abundant number, since it is smaller than the sum of its proper divisors (420419546).

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

259798356 is a wasteful number, since it uses less digits than its factorization.

259798356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8649 (or 8615 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The square root of 259798356 is about 16118.2615687921. The cubic root of 259798356 is about 638.0853880204.

The spelling of 259798356 in words is "two hundred fifty-nine million, seven hundred ninety-eight thousand, three hundred fifty-six".