214922187 has 8 divisors (see below), whose sum is σ = 318403280. Its totient is φ = 143281440.

The previous prime is 214922179. The next prime is 214922237. The reversal of 214922187 is 781229412.

It is not a de Polignac number, because 214922187 - 2³ = 214922179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214922387) 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, 3980014 + ... + 3980067.

It is an arithmetic number, because the mean of its divisors is an integer number (39800410).

Almost surely, 2^214922187 is an apocalyptic number.

214922187 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

214922187 is a deficient number, since it is larger than the sum of its proper divisors (103481093).

214922187 is an equidigital number, since it uses as much as digits as its factorization.

214922187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7960090 (or 7960084 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 214922187 is about 14660.2246572145. The cubic root of 214922187 is about 599.0003604596. Note that the first 3 decimals are identical.

It can be divided in two parts, 2149 and 22187, that added together give a square (24336 = 156²).

The spelling of 214922187 in words is "two hundred fourteen million, nine hundred twenty-two thousand, one hundred eighty-seven".