218364124 has 24 divisors (see below), whose sum is σ = 430327296. Its totient is φ = 96054000.

The previous prime is 218364103. The next prime is 218364143. The reversal of 218364124 is 421463812.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78682 + ... + 81409.

It is an arithmetic number, because the mean of its divisors is an integer number (17930304).

Almost surely, 2^218364124 is an apocalyptic number.

It is an amenable number.

218364124 is a deficient number, since it is larger than the sum of its proper divisors (211963172).

218364124 is a wasteful number, since it uses less digits than its factorization.

218364124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160137 (or 160135 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 218364124 is about 14777.1487100861. The cubic root of 218364124 is about 602.1810656843.

The spelling of 218364124 in words is "two hundred eighteen million, three hundred sixty-four thousand, one hundred twenty-four".