218039672 has 16 divisors (see below), whose sum is σ = 413751240. Its totient is φ = 107706016.

The previous prime is 218039663. The next prime is 218039683. The reversal of 218039672 is 276930812.

218039672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163523 + ... + 164850.

Almost surely, 2^218039672 is an apocalyptic number.

It is an amenable number.

218039672 is a deficient number, since it is larger than the sum of its proper divisors (195711568).

218039672 is a wasteful number, since it uses less digits than its factorization.

218039672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328462 (or 328458 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 218039672 is about 14766.1664625589. The cubic root of 218039672 is about 601.8826715859.

The spelling of 218039672 in words is "two hundred eighteen million, thirty-nine thousand, six hundred seventy-two".