218457230 has 8 divisors (see below), whose sum is σ = 393223032. Its totient is φ = 87382888.

The previous prime is 218457229. The next prime is 218457263. The reversal of 218457230 is 32754812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×218457230² = 95447122678545800, which contains 22 as substring.

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, 10922852 + ... + 10922871.

It is an arithmetic number, because the mean of its divisors is an integer number (49152879).

Almost surely, 2^218457230 is an apocalyptic number.

218457230 is a deficient number, since it is larger than the sum of its proper divisors (174765802).

218457230 is a wasteful number, since it uses less digits than its factorization.

218457230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21845730.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 218457230 is about 14780.2987114605. The cubic root of 218457230 is about 602.2666394232.

The spelling of 218457230 in words is "two hundred eighteen million, four hundred fifty-seven thousand, two hundred thirty".