508221216 has 60 divisors (see below), whose sum is σ = 1494672102. Its totient is φ = 169406208.

The previous prime is 508221211. The next prime is 508221227. The reversal of 508221216 is 612122805.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 506250000 + 1971216 = 22500^2 + 1404^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 508221216.

It is not an unprimeable number, because it can be changed into a prime (508221211) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 95445 + ... + 100628.

Almost surely, 2^508221216 is an apocalyptic number.

It is an amenable number.

508221216 is an abundant number, since it is smaller than the sum of its proper divisors (986450886).

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

508221216 is a wasteful number, since it uses less digits than its factorization.

508221216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196095 (or 196078 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 508221216 is about 22543.7622414716. The cubic root of 508221216 is about 798.0270215283.

The spelling of 508221216 in words is "five hundred eight million, two hundred twenty-one thousand, two hundred sixteen".