250028640 has 192 divisors, whose sum is σ = 903813120. Its totient is φ = 64488960.

The previous prime is 250028599. The next prime is 250028651. The reversal of 250028640 is 46820052.

250028640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 132987 + ... + 134853.

It is an arithmetic number, because the mean of its divisors is an integer number (4707360).

Almost surely, 2^250028640 is an apocalyptic number.

250028640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250028640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451906560).

250028640 is an abundant number, since it is smaller than the sum of its proper divisors (653784480).

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

250028640 is a wasteful number, since it uses less digits than its factorization.

250028640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922 (or 1908 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 250028640 is about 15812.2939512267. The cubic root of 250028640 is about 629.9845801215.

Adding to 250028640 its reverse (46820052), we get a palindrome (296848692).

The spelling of 250028640 in words is "two hundred fifty million, twenty-eight thousand, six hundred forty".