218190532 has 48 divisors (see below), whose sum is σ = 449680000. Its totient is φ = 92588832.

The previous prime is 218190527. The next prime is 218190551. The reversal of 218190532 is 235091812.

It is a junction number, because it is equal to n+sod(n) for n = 218190494 and 218190503.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148819 + ... + 150277.

Almost surely, 2^218190532 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 218190532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224840000).

218190532 is an abundant number, since it is smaller than the sum of its proper divisors (231489468).

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

218190532 is a wasteful number, since it uses less digits than its factorization.

218190532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 218190532 is about 14771.2738787147. The cubic root of 218190532 is about 602.0214522732.

The spelling of 218190532 in words is "two hundred eighteen million, one hundred ninety thousand, five hundred thirty-two".