218093532 has 12 divisors (see below), whose sum is σ = 508884936. Its totient is φ = 72697840.

The previous prime is 218093531. The next prime is 218093537. The reversal of 218093532 is 235390812.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 218093493 and 218093502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218093531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9087219 + ... + 9087242.

It is an arithmetic number, because the mean of its divisors is an integer number (42407078).

Almost surely, 2^218093532 is an apocalyptic number.

It is an amenable number.

218093532 is an abundant number, since it is smaller than the sum of its proper divisors (290791404).

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

218093532 is a wasteful number, since it uses less digits than its factorization.

218093532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18174468 (or 18174466 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 218093532 is about 14767.9901137562. The cubic root of 218093532 is about 601.9322263780.

The spelling of 218093532 in words is "two hundred eighteen million, ninety-three thousand, five hundred thirty-two".