218195432 has 96 divisors (see below), whose sum is σ = 523998720. Its totient is φ = 84389760.

The previous prime is 218195381. The next prime is 218195443. The reversal of 218195432 is 234591812.

It is a hoax number, since the sum of its digits (35) 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 = 218195392 and 218195401.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239057 + ... + 239967.

It is an arithmetic number, because the mean of its divisors is an integer number (5458320).

Almost surely, 2^218195432 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 218195432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261999360).

218195432 is an abundant number, since it is smaller than the sum of its proper divisors (305803288).

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

218195432 is a wasteful number, since it uses less digits than its factorization.

218195432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 980 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 218195432 is about 14771.4397402555. The cubic root of 218195432 is about 602.0259588590.

The spelling of 218195432 in words is "two hundred eighteen million, one hundred ninety-five thousand, four hundred thirty-two".