It is a self number, because there is not a number n which added to its sum of digits gives 526258340.
It is an unprimeable number.
Almost surely, 2526258340 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
526258340 is a wasteful number, since it uses less digits than its factorization.
526258340 is an evil number, because the sum of its binary digits is even.
The square root of 526258340 is about 22940.3212706361. The cubic root of 526258340 is about 807.3583299663.
The spelling of 526258340 in words is "five hundred twenty-six million, two hundred fifty-eight thousand, three hundred forty".