214643220 has 48 divisors (see below), whose sum is σ = 655639488. Its totient is φ = 52034560.

The previous prime is 214643197. The next prime is 214643227. The reversal of 214643220 is 22346412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214643227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161949 + ... + 163268.

It is an arithmetic number, because the mean of its divisors is an integer number (13659156).

Almost surely, 2^214643220 is an apocalyptic number.

214643220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214643220 is an abundant number, since it is smaller than the sum of its proper divisors (440996268).

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

214643220 is a wasteful number, since it uses less digits than its factorization.

214643220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325240 (or 325238 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 214643220 is about 14650.7071501686. The cubic root of 214643220 is about 598.7410826147.

Adding to 214643220 its reverse (22346412), we get a palindrome (236989632).

The spelling of 214643220 in words is "two hundred fourteen million, six hundred forty-three thousand, two hundred twenty".