218000356 has 24 divisors (see below), whose sum is σ = 436806720. Its totient is φ = 93256032.

The previous prime is 218000351. The next prime is 218000359. The reversal of 218000356 is 653000812.

It is a happy number.

218000356 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×218000356² = 95048310432253472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 218000356.

It is not an unprimeable number, because it can be changed into a prime (218000351) 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, 8850 + ... + 22678.

It is an arithmetic number, because the mean of its divisors is an integer number (18200280).

Almost surely, 2^218000356 is an apocalyptic number.

It is an amenable number.

218000356 is an abundant number, since it is smaller than the sum of its proper divisors (218806364).

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

218000356 is a wasteful number, since it uses less digits than its factorization.

218000356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14403 (or 14401 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 218000356 is about 14764.8351159097. The cubic root of 218000356 is about 601.8464930909.

The spelling of 218000356 in words is "two hundred eighteen million, three hundred fifty-six", and thus it is an aban number.