504012218 has 4 divisors (see below), whose sum is σ = 756018330. Its totient is φ = 252006108.

The previous prime is 504012211. The next prime is 504012227. The reversal of 504012218 is 812210405.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 287539849 + 216472369 = 16957^2 + 14713^2 .

It is a junction number, because it is equal to n+sod(n) for n = 504012193 and 504012202.

It is not an unprimeable number, because it can be changed into a prime (504012211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126003053 + ... + 126003056.

Almost surely, 2^504012218 is an apocalyptic number.

504012218 is a deficient number, since it is larger than the sum of its proper divisors (252006112).

504012218 is a wasteful number, since it uses less digits than its factorization.

504012218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252006111.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 504012218 is about 22450.2164354823. The cubic root of 504012218 is about 795.8178722311.

The spelling of 504012218 in words is "five hundred four million, twelve thousand, two hundred eighteen".