522850440 has 128 divisors (see below), whose sum is σ = 1815552000. Its totient is φ = 117980928.

The previous prime is 522850439. The next prime is 522850451. The reversal of 522850440 is 44058225.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 522850398 and 522850407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62421 + ... + 70299.

It is an arithmetic number, because the mean of its divisors is an integer number (14184000).

Almost surely, 2^522850440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522850440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (907776000).

522850440 is an abundant number, since it is smaller than the sum of its proper divisors (1292701560).

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

522850440 is a wasteful number, since it uses less digits than its factorization.

522850440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7979 (or 7975 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 522850440 is about 22865.9231171628. The cubic root of 522850440 is about 805.6118132270.

The spelling of 522850440 in words is "five hundred twenty-two million, eight hundred fifty thousand, four hundred forty".