218046136 has 64 divisors (see below), whose sum is σ = 511822080. Its totient is φ = 84602880.

The previous prime is 218046133. The next prime is 218046137. The reversal of 218046136 is 631640812.

It is a happy number.

218046136 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 218046098 and 218046107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218046133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188536 + ... + 189688.

It is an arithmetic number, because the mean of its divisors is an integer number (7997220).

Almost surely, 2^218046136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218046136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255911040).

218046136 is an abundant number, since it is smaller than the sum of its proper divisors (293775944).

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

218046136 is a wasteful number, since it uses less digits than its factorization.

218046136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 218046136 is about 14766.3853396828. The cubic root of 218046136 is about 601.8886193279. Note that the first 3 decimals are identical.

Adding to 218046136 its reverse (631640812), we get a palindrome (849686948).

The spelling of 218046136 in words is "two hundred eighteen million, forty-six thousand, one hundred thirty-six".