218282812 has 12 divisors (see below), whose sum is σ = 416721816. Its totient is φ = 99219440.

The previous prime is 218282809. The next prime is 218282819.

218282812 is nontrivially palindromic in base 10.

218282812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218282819) 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, 2480443 + ... + 2480530.

It is an arithmetic number, because the mean of its divisors is an integer number (34726818).

Almost surely, 2^218282812 is an apocalyptic number.

218282812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

218282812 is a deficient number, since it is larger than the sum of its proper divisors (198439004).

218282812 is a wasteful number, since it uses less digits than its factorization.

218282812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960988 (or 4960986 counting only the distinct ones).

The product of its digits is 8192, while the sum is 34.

The square root of 218282812 is about 14774.3971789038. The cubic root of 218282812 is about 602.1063119125.

The spelling of 218282812 in words is "two hundred eighteen million, two hundred eighty-two thousand, eight hundred twelve".