218905254 has 20 divisors (see below), whose sum is σ = 490510284. Its totient is φ = 72968364.

The previous prime is 218905249. The next prime is 218905259. The reversal of 218905254 is 452509812.

It is an interprime number because it is at equal distance from previous prime (218905249) and next prime (218905259).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218905259) by changing a digit.

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 in 9 ways as a sum of consecutive naturals, for example, 675472 + ... + 675795.

Almost surely, 2^218905254 is an apocalyptic number.

218905254 is an abundant number, since it is smaller than the sum of its proper divisors (271605030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218905254 is a wasteful number, since it uses less digits than its factorization.

218905254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351281 (or 1351272 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 218905254 is about 14795.4470699604. The cubic root of 218905254 is about 602.6780787061.

The spelling of 218905254 in words is "two hundred eighteen million, nine hundred five thousand, two hundred fifty-four".