218030804 has 6 divisors (see below), whose sum is σ = 381553914. Its totient is φ = 109015400.

The previous prime is 218030789. The next prime is 218030807. The reversal of 218030804 is 408030812.

It can be written as a sum of positive squares in only one way, i.e., 153710404 + 64320400 = 12398^2 + 8020^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218030807) by changing a digit.

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 as a sum of consecutive naturals, namely, 27253847 + ... + 27253854.

It is an arithmetic number, because the mean of its divisors is an integer number (63592319).

Almost surely, 2^218030804 is an apocalyptic number.

It is an amenable number.

218030804 is a deficient number, since it is larger than the sum of its proper divisors (163523110).

218030804 is a wasteful number, since it uses less digits than its factorization.

218030804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54507705 (or 54507703 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 218030804 is about 14765.8661784536. The cubic root of 218030804 is about 601.8745116521.

The spelling of 218030804 in words is "two hundred eighteen million, thirty thousand, eight hundred four".