811424250 has 256 divisors, whose sum is σ = 2771758080. Its totient is φ = 171072000.

The previous prime is 811424249. The next prime is 811424293. The reversal of 811424250 is 52424118.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 613590 + ... + 614910.

It is an arithmetic number, because the mean of its divisors is an integer number (10827180).

Almost surely, 2^811424250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811424250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1385879040).

811424250 is an abundant number, since it is smaller than the sum of its proper divisors (1960333830).

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

811424250 is a wasteful number, since it uses less digits than its factorization.

811424250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 811424250 is about 28485.5094741168. The cubic root of 811424250 is about 932.7157869228.

Adding to 811424250 its reverse (52424118), we get a palindrome (863848368).

The spelling of 811424250 in words is "eight hundred eleven million, four hundred twenty-four thousand, two hundred fifty".