214188867 has 20 divisors (see below), whose sum is σ = 330997920. Its totient is φ = 137867184.

The previous prime is 214188859. The next prime is 214188911. The reversal of 214188867 is 768881412.

It is not a de Polignac number, because 214188867 - 2³ = 214188859 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (214180867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43243 + ... + 47940.

It is an arithmetic number, because the mean of its divisors is an integer number (16549896).

Almost surely, 2^214188867 is an apocalyptic number.

214188867 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

214188867 is a deficient number, since it is larger than the sum of its proper divisors (116809053).

214188867 is an equidigital number, since it uses as much as digits as its factorization.

214188867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91224 (or 91215 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 214188867 is about 14635.1927558198. The cubic root of 214188867 is about 598.3183159683.

The spelling of 214188867 in words is "two hundred fourteen million, one hundred eighty-eight thousand, eight hundred sixty-seven".