250128426 has 32 divisors (see below), whose sum is σ = 535233600. Its totient is φ = 77690880.

The previous prime is 250128421. The next prime is 250128433. The reversal of 250128426 is 624821052.

It is a junction number, because it is equal to n+sod(n) for n = 250128393 and 250128402.

It is not an unprimeable number, because it can be changed into a prime (250128421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11031 + ... + 24938.

It is an arithmetic number, because the mean of its divisors is an integer number (16726050).

Almost surely, 2^250128426 is an apocalyptic number.

250128426 is an abundant number, since it is smaller than the sum of its proper divisors (285105174).

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

250128426 is a wasteful number, since it uses less digits than its factorization.

250128426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36054.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 250128426 is about 15815.4489661217. The cubic root of 250128426 is about 630.0683775619.

Adding to 250128426 its reverse (624821052), we get a palindrome (874949478).

The spelling of 250128426 in words is "two hundred fifty million, one hundred twenty-eight thousand, four hundred twenty-six".