218230824 has 64 divisors (see below), whose sum is σ = 643645440. Its totient is φ = 60338880.

The previous prime is 218230811. The next prime is 218230843. The reversal of 218230824 is 428032812.

218230824 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 218230791 and 218230800.

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, 15744 + ... + 26159.

It is an arithmetic number, because the mean of its divisors is an integer number (10056960).

Almost surely, 2^218230824 is an apocalyptic number.

218230824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

218230824 is an abundant number, since it is smaller than the sum of its proper divisors (425414616).

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

218230824 is a wasteful number, since it uses less digits than its factorization.

218230824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41950 (or 41946 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 218230824 is about 14772.6376791689. The cubic root of 218230824 is about 602.0585072807.

The spelling of 218230824 in words is "two hundred eighteen million, two hundred thirty thousand, eight hundred twenty-four".