218374030 has 32 divisors (see below), whose sum is σ = 472872960. Its totient is φ = 70930080.

The previous prime is 218374021. The next prime is 218374069. The reversal of 218374030 is 30473812.

It is a self number, because there is not a number n which added to its sum of digits gives 218374030.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 80766 + ... + 83425.

It is an arithmetic number, because the mean of its divisors is an integer number (14777280).

Almost surely, 2^218374030 is an apocalyptic number.

218374030 is an abundant number, since it is smaller than the sum of its proper divisors (254498930).

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

218374030 is a wasteful number, since it uses less digits than its factorization.

218374030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164224.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 218374030 is about 14777.4838859665. The cubic root of 218374030 is about 602.1901714466.

The spelling of 218374030 in words is "two hundred eighteen million, three hundred seventy-four thousand, thirty".