259428774 has 64 divisors (see below), whose sum is σ = 598440960. Its totient is φ = 74149920.

The previous prime is 259428773. The next prime is 259428779. The reversal of 259428774 is 477824952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259428773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555289 + ... + 555755.

It is an arithmetic number, because the mean of its divisors is an integer number (9350640).

Almost surely, 2^259428774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 259428774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299220480).

259428774 is an abundant number, since it is smaller than the sum of its proper divisors (339012186).

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

259428774 is a wasteful number, since it uses less digits than its factorization.

259428774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945.

The product of its digits is 1128960, while the sum is 48.

The square root of 259428774 is about 16106.7927906210. The cubic root of 259428774 is about 637.7826701845.

It can be divided in two parts, 25942 and 8774, that added together give a triangular number (34716 = T₂₆₃).

The spelling of 259428774 in words is "two hundred fifty-nine million, four hundred twenty-eight thousand, seven hundred seventy-four".