218045136 has 40 divisors (see below), whose sum is σ = 569102464. Its totient is φ = 71930880.

The previous prime is 218045119. The next prime is 218045137. The reversal of 218045136 is 631540812.

218045136 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218045137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18760 + ... + 28071.

Almost surely, 2^218045136 is an apocalyptic number.

It is an amenable number.

218045136 is an abundant number, since it is smaller than the sum of its proper divisors (351057328).

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

218045136 is a wasteful number, since it uses less digits than its factorization.

218045136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46939 (or 46933 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 218045136 is about 14766.3514789538. The cubic root of 218045136 is about 601.8876992023.

Adding to 218045136 its reverse (631540812), we get a palindrome (849585948).

The spelling of 218045136 in words is "two hundred eighteen million, forty-five thousand, one hundred thirty-six".