218070438 has 16 divisors (see below), whose sum is σ = 436311360. Its totient is φ = 72661736.

The previous prime is 218070421. The next prime is 218070449. The reversal of 218070438 is 834070812.

It is a junction number, because it is equal to n+sod(n) for n = 218070399 and 218070408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14653 + ... + 25511.

It is an arithmetic number, because the mean of its divisors is an integer number (27269460).

Almost surely, 2^218070438 is an apocalyptic number.

218070438 is an abundant number, since it is smaller than the sum of its proper divisors (218240922).

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

218070438 is a wasteful number, since it uses less digits than its factorization.

218070438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14211.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 218070438 is about 14767.2081992501. The cubic root of 218070438 is about 601.9109793571.

The spelling of 218070438 in words is "two hundred eighteen million, seventy thousand, four hundred thirty-eight".