218472104 has 8 divisors (see below), whose sum is σ = 409635210. Its totient is φ = 109236048.

The previous prime is 218472091. The next prime is 218472113. The reversal of 218472104 is 401274812.

It can be written as a sum of positive squares in only one way, i.e., 178756900 + 39715204 = 13370^2 + 6302^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13654499 + ... + 13654514.

Almost surely, 2^218472104 is an apocalyptic number.

It is an amenable number.

218472104 is a deficient number, since it is larger than the sum of its proper divisors (191163106).

218472104 is a wasteful number, since it uses less digits than its factorization.

218472104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27309019 (or 27309015 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 218472104 is about 14780.8018726996. The cubic root of 218472104 is about 602.2803078664.

The spelling of 218472104 in words is "two hundred eighteen million, four hundred seventy-two thousand, one hundred four".