218134424 has 24 divisors (see below), whose sum is σ = 412519860. Its totient is φ = 108133056.

The previous prime is 218134417. The next prime is 218134471. The reversal of 218134424 is 424431812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 533132 + ... + 533540.

Almost surely, 2^218134424 is an apocalyptic number.

It is an amenable number.

218134424 is a deficient number, since it is larger than the sum of its proper divisors (194385436).

218134424 is an equidigital number, since it uses as much as digits as its factorization.

218134424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 574 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

The square root of 218134424 is about 14769.3745297491. The cubic root of 218134424 is about 601.9698442969.

The spelling of 218134424 in words is "two hundred eighteen million, one hundred thirty-four thousand, four hundred twenty-four".