522447408 has 300 divisors, whose sum is σ = 1855844760. Its totient is φ = 141087744.

The previous prime is 522447407. The next prime is 522447481. The reversal of 522447408 is 804744225.

522447408 is a `hidden beast` number, since 5 + 2 + 244 + 7 + 408 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (522447407) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1206360 + ... + 1206792.

Almost surely, 2^522447408 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 522447408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927922380).

522447408 is an abundant number, since it is smaller than the sum of its proper divisors (1333397352).

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

522447408 is a wasteful number, since it uses less digits than its factorization.

522447408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 522447408 is about 22857.1084785456. The cubic root of 522447408 is about 805.4047617912.

The spelling of 522447408 in words is "five hundred twenty-two million, four hundred forty-seven thousand, four hundred eight".